The electric booster button is fun too because you can add a little more push on the straights.
Electric Slot Car Race Track Sets - 1:43 Race Car Track Sets with 4 Slot Cars...
Kids Toy-electric Powered Slot Car Race Track Set, Wheels Track, Race Track Car
Slot-Car-Race-Track-Sets for Boys Kids, Battery or Electric Race Car Track wi...
Slot Car Race Track Sets for Boys Age 4 5 6 7 8-12, Electric Race Car Track w...
