It’s at Truckpulls.com and you see how many levels you can advance with your pulling truck. You can adjust the front and rear tire pressure for maximum traction, and increase or decrease your overall gear ratio in search of that perfect, off-the-line grunt needed to get the sled moving, and the top end to keep it moving. You can also choose between stock, all-terrain, and mud-terrain tires. The truck even blows black smoke, and a smoke cloud forms over you once the sled stops! There are also user instructions before you begin.
For the record, I haven’t made it past level eight, yet! Check it out at: http://www.truckpulls.com/TruckPullsVideoGame.html