Demolition Derby on a small hex grid. Players have six cars each and roll dice to smash vehicles off the board.
Published in 1992 as Crash! by Franjos and in 2007 as Manoover by Kadon. The published versions do not accommodate 3 players.
Kadon has, by special order, a 2-sided gameboard that has the 2 player board on one side and the 3 player board on the reverse. (It comes with enough pieces for the three player game, of course.)