Real FX Racing:  Slotless Racetrack System including two RC Cars and Handsets with Artificial Intelligence THE MOST REALISTIC RACING - outside of a real car on a real track NO SLOTS, NO LANES - overtake anywhere on track with 'Ackerman' style steering THE BEST OF ALL 3! - said Pistonheads (referring to Video games, Slot racers and R/C) REALISTIC RACE PLAY & HAZARDS - overtake anywhere on track, oil spills, lap times, mechanical failures, tyre blow outs and more ARTIFICIAL INTELLIGENCE - helps you stay on the track BATTERY SYSTEM LASTS LONGER - compared with other systems (Real FX = Over 4 hours!) SINGLE OR MULTI-PLAYER ACTION! - switch your second car into Ai pace car mode for single player race duels Batteries 6 AA & 6 AAA batteries required.