Don't leave the bridge at full speed or you'll very likely take a fatal fall. Start braking well in advance of clearing the last plank.
As a general rule, it's never a good idea to simply hold the throttle down at full speed.
Pump the gas gently to just about clear steep climbs so that your car will settle gently into the descent.
There are three things you can spend your money on in the game: upgrades for your vehicle, new landscapes and new cars.
Pick up the red fuel canisters that occasionally appear on the road because once you're out of fuel your high-score attempt will end.
Perform tricks to score more coins when the rewards are tallied up at the end of each run.