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A collapsible wagon comprises a frame, four wheels, a pliable liner, and a telescoping tow handle. The frame has four sides that are each formed by a respective scissor-bar assembly. The frame also has a vertically oriented telescoping pole assembly at the intersection of each pair of the scissor-ba

A collapsible wagon comprises a frame, four wheels, a pliable liner, and a telescoping tow handle. The frame has four sides that are each formed by a respective scissor-bar assembly. The frame also has a vertically oriented telescoping pole assembly at the intersection of each pair of the scissor-bar assemblies. The frame is configured such that, as the wagon is altered from its expanded to its collapsed configuration, the scissor-bar assemblies and the telescoping pole assemblies increase in height and the scissor-bar assemblies decrease in width. Each of the four wheels is attached to a bottom end portion of a respective one of the telescoping pole assemblies. The pliable liner is connected to the frame and defines an open-top interior compartment of the wagon when the wagon is in its expanded configuration. The telescoping tow handle is adjustable between collapsed and expanded configurations.

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1. A method of collapsing a wagon, the wagon comprising a frame, a collapsible tow handle, and a pliable liner, the frame having four sides, each side being formed by a respective scissor-bar assembly, at least two of the scissor-bar assemblies each comprising two pairs of crossed-bars, the pairs of

1. A method of collapsing a wagon, the wagon comprising a frame, a collapsible tow handle, and a pliable liner, the frame having four sides, each side being formed by a respective scissor-bar assembly, at least two of the scissor-bar assemblies each comprising two pairs of crossed-bars, the pairs of crossed-bars being connected to each other at a top-center portion and a bottom-center portion, the pliable liner defining an open-top interior compartment of the wagon when the wagon is in an expanded configuration, the frame also having a vertically oriented telescoping pole assembly at an intersection of each pair of the scissor-bar assemblies, the pliable liner being fixed to a top of each of the telescoping pole assemblies and comprising inverted pockets that receive the top-center portion of the at least two of the scissor-bar assemblies, the pliable liner also comprising four vertical corners that are attached to the telescoping pole assemblies beneath the tops of the telescoping pole assemblies, the method comprising: adjusting the frame of the wagon from the expanded configuration to a collapsed configuration in a manner causing the scissor-bar assemblies and the telescoping pole assemblies to increase in height and the scissor-bar assemblies to decrease in width, the pliable liner being collapsed in the process. 2. The method of claim 1 wherein the telescoping pole assemblies are generally parallel to each other and remain so while performing the method of collapsing the wagon. 3. The method of claim 1 wherein the wagon comprises a collapsible bottom support assembly having four bars that are each pivotally connected to a central hub and extend therefrom, and the method further comprises pivoting each of the four bars of the bottom support assembly downward with respect to the central hub as the wagon is adjusted from the expanded configuration to the collapsed configuration. 4. The method of claim 3 wherein the method is performed by moving the central hub upward in a manner causing the four telescoping pole assemblies to move toward each other and expand, causing the scissor-bar assemblies to collapse. 5. A method of collapsing a wagon, the wagon comprising a frame, a collapsible tow handle, a collapsible bottom support assembly, and a pliable liner, the frame having four sides, each side being formed by a respective scissor-bar assembly, the frame also having a vertically oriented telescoping pole assembly at an intersection of each pair of the scissor-bar assemblies, the collapsible bottom support assembly having four bars that are each pivotally connected to a central hub and extend therefrom, the liner defining an open-top interior compartment of the wagon when the wagon is an the expanded configuration, the pliable liner comprising a handle that is located within the interior compartment and above the central hub, the pliable liner being connected to the bottom support assembly in a manner such that pulling the handle upward causes the central hub of the bottom support assembly to move upward and thereby collapse the wagon, the method comprising: adjusting the frame of the wagon from the expanded configuration to a collapsed configuration by pulling upward on the handle in a manner causing the scissor-bar assemblies and the telescoping pole assemblies to increase in height and the scissor-bar assemblies to decrease in width, the pliable liner being collapsed in the process, the four bars of the bottom support assembly pivoting downward with respect to the central hub and the central hub moving upward in a manner causing the four telescoping pole assemblies to move toward each other and expand, causing the scissor-bar assemblies to collapse as the wagon is adjusted from the expanded configuration to the collapsed configuration. 6. The method of claim 1 wherein each of two of the scissor-bar assemblies comprises a single pair of crossed bars, and the adjusting of the frame of the wagon from the expanded configuration to the collapsed configuration occurs in a manner causing the slope of the crossed bars to increase. 7. The method of claim 1 wherein the wagon comprises four wheels that are configured and adapted to support the wagon from a ground surface when the wagon is in the expanded configuration and when the wagon is in its collapsed configuration. 8. The method of claim 7 wherein the wagon is configured such that two of the wheels can only revolve about a fixed common axis and the other wheels revolve about axes that are able to pivot relative to the fixed common axis. 9. The method of claim 1 wherein adjusting the frame of the wagon from the expanded configuration to the collapsed configuration includes collapsing the tow handle telescopically. 10. A method of collapsing a wagon, the wagon comprising a frame, a collapsible tow handle, and a pliable liner, the frame having four sides, at least two of the sides opposite each other being formed by a respective scissor-bar assembly, the frame also having a vertically oriented telescoping pole assembly at an intersection of each pair of the sides, the scissor-bar assemblies each comprising two pairs of crossed-bars, the pairs of crossed-bars being connected to each other at a top-center portion and a bottom-center portion, the pliable liner defining an open-top interior compartment of the wagon when the wagon is in an expanded configuration, the pliable liner being fixed to a top of each of the telescoping pole assemblies and comprising inverted pockets that receive the top-center portion of the scissor-bar assemblies, the pliable liner also comprising four vertical corners that are attached to the telescoping pole assemblies beneath the tops of the telescoping pole assemblies, the method comprising: adjusting the frame of the wagon from the expanded configuration to a collapsed configuration in a manner causing the scissor-bar assemblies and the telescoping pole assemblies to increase in height and the scissor-bar assemblies to decrease in width, the pliable liner being collapsed in the process. 11. The method of claim 10 wherein the adjusting of the frame of the wagon from the expanded configuration to the collapsed configuration occurs in a manner causing the slope of the crossed bars to increase.