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A vehicle drag reducer. Implementations may include an upper portion attached or integrated within a top of a vehicle and having four air ducts configured to receive air from a front end of the top of the vehicle and transmit it towards a rear end of the top of the vehicle; and two back portions loc

A vehicle drag reducer. Implementations may include an upper portion attached or integrated within a top of a vehicle and having four air ducts configured to receive air from a front end of the top of the vehicle and transmit it towards a rear end of the top of the vehicle; and two back portions located at a back of the vehicle each including two air ducts and six exit ports, each back portion being configured to receive air from two of the four air ducts of the upper portion and exit the air from the back portion through the six exit ports. The upper portion may include one of a U joint, a Z joint, and an L joint connecting the upper portion to the vehicle. The back portion may include one of a U joint and a Z joint. Methods of reducing vehicle drag are disclosed.

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1. A vehicle drag reducer, comprising: an upper portion that is one of attached to and integrated within a top of a vehicle, the upper portion comprising four air ducts configured to receive air from a front end of the top of the vehicle and transmit the air c yards a rear end of the top of the vehi

1. A vehicle drag reducer, comprising: an upper portion that is one of attached to and integrated within a top of a vehicle, the upper portion comprising four air ducts configured to receive air from a front end of the top of the vehicle and transmit the air c yards a rear end of the top of the vehicle; andtwo back portions coupled to the upper portion and located at a back of the vehicle each comprising two air ducts and six exit ports, each back portion being configured to receive air from two of the four air ducts of the upper portion and exit the air from the back portion through the six exit ports;wherein the upper portion further comprises an extension extending forward towards a front of the vehicle over a portion of one of a cab and an air dam of the vehicle across an entire width of the vehicle. 2. The vehicle drag reducer of claim 1, wherein the upper portion further comprises one of a U joint, a Z joint, and an L joint connecting the upper portion with the vehicle and at least partially forming an air duct. 3. The vehicle drag reducer of claim 1, wherein the back portion further comprises one of a U joint and a Z joint at least partially forming an air duct and connecting a first back plate of the back portion to one of a second plate of the back portion and a rear door of the vehicle. 4. The vehicle drag reducer of claim 1, further comprising a rounded portion at a juncture of the upper portion and the back portion, configured to direct the air from the upper portion towards the back portion. 5. The vehicle drag reducer of claim 1, wherein the upper portion further comprises three Z joints and two U joints connecting the upper portion with the vehicle and extending substantially the length of the vehicle at least partially forming an air duct and the back portion further comprises four U joints and two Z joints at least partially forming an air duct connecting a first plate of the back portion to one of a second plate of the back portion and a rear door of the vehicle. 6. A vehicle drag reducer, comprising: an upper portion that is one of attached to and integrated within a top of a vehicle, the upper portion comprising one of a U joint, a Z joint, and an L joint connecting the upper portion to the vehicle and extending substantially the length of the vehicle at least partially forming an air duct; the upper portion being configured to receive air from a front of the top of the vehicle and transmit the air towards a rear end of the top of the vehicle; anda back portion located at a back of the vehicle comprising an exit port and comprising one of a U joint and a Z joint at least partially forming an air duct, the back portion being coupled to the upper portion and configured to receive air from the upper portion and exit the air from the back portion through the exit port;wherein the upper portion further comprises an extension extending forward towards a front of the vehicle over a portion of one of a cab and an air dam of the vehicle across an entire width of the vehicle. 7. The vehicle drag reducer of claim 6, wherein the upper portion further comprises four air ducts configured to receive air from a front end of the top of the vehicle and transmit the air towards a rear end of the top of the vehicle. 8. The vehicle drag reducer of claim 6, wherein the back portion further comprises two air ducts. 9. The vehicle drag reducer of claim 6, wherein the back portion further comprises six exit ports. 10. The vehicle drag reducer of claim 6, wherein the vehicle drag reducer comprises two back portions and each back portion comprises two air ducts and is configured to receive air from two of four air ducts of the upper portion and exit the air from the back portion through six exit ports of the back portion. 11. The vehicle drag reducer of claim 6, further comprising a rounded portion at a juncture of the upper portion and the back portion, configured to direct the air from the upper portion towards the back portion. 12. The vehicle drag reducer of claim 6, wherein the upper portion further comprises three Z joints and two U joints connecting the upper portion to the vehicle, and the back portion further comprises four U joints and two Z joints connecting the first plate of the back portion to one of a second plate of the back portion and a rear door of the vehicle. 13. A method of reducing vehicle drag, comprising: one of attaching an upper portion of a vehicle drag reducer to a top of a vehicle and integrating an upper portion of a vehicle drag reducer within a top of a vehicle, the upper portion comprising four air ducts configured to receive air from a from end of the top of the vehicle and transmit the air towards a rear end of the top of the vehicle;locating two back portions of the vehicle drag reducer at a back of the vehicle and coupled to the upper portion,the back portions each comprising two air ducts and six exit ports, each back portion being configured to receive air from two of the four air ducts of the upper portion and exit the air from the back portion through the six exit ports; anddirecting the air from the upper portion towards the back portion through a rounded portion at a juncture of the upper portion and the back portion. 14. The method of claim 13, further comprising coupling the upper portion to the vehicle with one of an L joint, a Z joint, and a U joint extending substantially length of the vehicle and at least partially forming an air duct. 15. The method of claim 13, further comprising coupling a first plate of the back portion to one of a second plate of the back portion and a rear door of the vehicle with one of an L joint, a Z joint, and Z joint, the one of the joint, Z joint and U joint at least partially forming an air duct. 16. The method of claim 13, further comprising extending an extension of the upper portion forward towards a front of the vehicle over a portion of one of a cab and an air dam of the vehicle across an entire width of the vehicle. 17. The method of claim 13, further comprising coupling the upper portion to the vehicle with three Z joints and two U joints, the three Z joints and two U joints at least partially forming an air duct and connecting a first plate of the back portion to one of a second plate of the back portion and a rear door of the vehicle with four U joints and two Z joints, the four U joints and two Z joints at least partially forming an air duct.