The Hot Wheels I grew up with were die-cast, detailed replicas of actual cars or outrageously exaggerated hot rods, running down orange plastic tracks snapped together in any configuration I could imagine. The two latest Hot Wheels sitting on my desk are plastic, fold flat so they can fit into an iPhone-size carrying case, and require neither gravity nor muscle power to move.
Stealth Rides are Hot Wheels' latest remote controlled cars, with the unique feature of stowing away into their own remote controllers. The company designed them so that boys, its major demographic, can easily carry them around and play with them.
Currently, Stealth Rides come as either a race car or a treaded crawler, with a Batman Tumbler available in October. LINK