It's called Indy 800, and it was released in 1975. It used a massive cabinet (with mirrors for other people to watch the action) and allowed 8 people to play a color racing game (the first of its kind) at once. Indy 800 apparently revolutionized racing games. I hadn't even heard of this game until I saw how All Game Guide gave it 5/5 stars. Indy 800 inspired the classic Atari 2600 game Indy 500, as well as the 4-player arcade game Indy 4. Someone on another website informs me that a working unit can be found at The Game Room in New Jersey. Do you know anything about this game?
http://en.wikipedia.org/wiki/Indy_800
http://www.klov.com/game_detail.php?...I&game_id=8190
http://www.allgame.com/game.php?id=10311
http://www.arcadeflyers.com/?page=th...videodb&id=530