Love it! This is a really good take on the theme, and the gameplay works very nicely. My main complaint would be that the rocks very obviously spawn right in the path of the car and at a very predictable rate, which makes them fairly trivial to avoid. The steady speed of the train means that racking up points is largely a matter of sticking to the same shoot-dodge-shoot sequence of actions. I'd prefer to see the train's speed vary and the rocks spawn randomly (and more frequently) so you have to keep your eye on the car more than the train. But it works very well as-is, and it's easy for a lapse in concentration to screw up an attempt already. I like that you can blow up the tanks by driving into them as well as shooting them.