These bumper cars include two wireless remote controllers with different frequencies: red car is on 27 MHZ and green car is on 40 MHZ. With the dual joysticks on the remote you get full control over your bumper car’s movement, so that they can race around each other and collide easily. The price drops from $39.99 to $24.99. Shipping is free for prime members and nonmembers get free shipping over $25.