From the publisher:

Attention, attention! It is time to start the big race! All cars have taken their standing positions! Is McQueen going to win again? Join the race and see who will be the crazy speed champion this time. Ready, steady, go!

Game play:
Lay the board into the middle. Place the token next to the board. This is the "token bank".
Place the cars on the start line. Youngest player will start.

You win the game when you finish the race first. But to do that you need fuel. Token act as a fuel in this game.
You get fuel on the square with a cup on it. The max number of token collected is different with number of players.
Each token also add 1 to your dice roll. So 6 token add 6 to your dice roll.
After crossing the lightning square you will no longer get the token bonus.
And when two cars land on the same space, then the one who was there first will miss one turn.
Special squares:
Gas station - extra gas. 3 more spaces.
Wheel - snow. Subtract 2 from the next roll.
Flat tyre - miss two turns.
Gear box - stay put until roll at least 4.
Speedometer - 4 extra spaces.

The winner is the one who crosses the finis line first.