There is a secret. In the two rooms with a big Zurg (so the first room after all that stuff at the beginning and the last room) you can get 50,000 by hitting the Z on his chest. It is a pretty difficult target to hit so you'll probably miss it the first few tries but you'll get it eventually. It's how I got my high score (I got over 2 million a different time but for some reason a lot of the cars mess up when you get over 999,999). Also when you aim I advise holding the gun up to your eye like in my picture. My other advice is to spin as little as possible. It takes too much time and you lose your aim, find a target and hit it as long as possible. Turn your body instead of your car, which leads to my next piece of advice which is to ride by yourself.
