DigiQ from Takara is infrared-controlled, has two independent rear wheels powered by two tiny motors, and comes with a pistol-style analog controller.

Bit Char-G from Tomy (Tomica) is radio-controlled, single-motor rear wheel drive, front wheel steering, and comes with an awkward controller with forward/backward + left/right switches.

Check out the video clips to appreciate how small and maneuverable these cars are.