The Flintstones in Viva Rock Vegas

A prototype for this Flintstones the movie game. A GameCube version was planned but never released. There's a PS2 version but it's a totally different game.
Bedrock is ready to rumble! Fred, Wilma, and all their friends are ready to put their feet to the floor and burn it up all the way from Bedrock to Rock Vegas in the infamous "Boulderball Run", a hilarious race all across the madcap, crazy world of the Flintstones! Ready steady YABBA DABBA DOO!