Up to four vehicles can play at once; you and friends use iOS devices to control one to four of the cars. AI controls any cars you don't control.;Anki DRIVE includes a physical track that rolls out to 3.5 by 8.5 feet and is intended for use indoors;You can place the track on any flat surface, though flooring or a low-pile carpet works best;Anki DRIVE is suitable for all ages capable of navigating an iOS device;Additional cars available for separate purchase from Apple: Katal (Blue; part no. HD004); RHO (Red; part no. HD005)

• Anki DRIVE Starter Kit (Previous Version)
• Red

Anki DRIVE Starter Kit (Previous Version)Anki, Inc.