A wagon (in British English, sometimes waggon) or dray is a heavy four-wheeled vehicle. Wagons were formerly pulled by animals such as horses, mules or oxen.
http://en.wikipedia.org/wiki/Wagon

Larger Radio Flyer selection than Toys R Us - Red Wagons (TM): Official Site sells Radio Flyer wagons, tricycle, horses and toys
http://www.redwagons.com/

A station wagon (or simply wagon) in American, Australian, Canadian and New Zealand usage and an estate car (or just estate) in British usage, is a passenger automobile with a body ...
http://en.wikipedia.org/wiki/Station_wagon

Radio Flyer - Innovating Play Since 1917 - World's Largest Wagon ... To celebrate our 80th anniversary, we created a monument to the wonder of childhood play.
http://www.radioflyer.com/wlw/wlw.html

Wagon Made in USA 40" Bed with Standard Tires $320 - Free Shipping. Phantom All Terrain Beach Wagon Made in USA 45" Bed with Standard Tires $330 - Free Shipping
http://www.wagonworld.com/