Custom-built. The car was Galla Racing's entry in the 2003 Indy 500, driven by Al Unser, Jr. A water cooled computer system has been mounted where the engine was. Game play takes place through virtual reality goggles worn by the driver. Attract monitors display what the driver is seeing, as well as his/her face while driving. Game software is "Indy 500" by Sega, which lets the driver reach speeds up to 400 mph on the world's most famous track. Sound comes from Bose speakers that can blow you out of the car when cranked up. Driving functions (steering, accelerator, shift, and brakes) are linked to the game software. Service available through the builder of the simulator. Subject to availability when ordered. Financing available for qualified US buyer. TMAECH ad ref. #265