Quite fun! If it wasn't for the crashing I'd be playing this for hours :P. I love the combat while racing idea, it feels so good when you're taking risks and trying different maneuvers. Like slowing down a bunch so the enemy vehicle veers off into a rock :D
One strange thing I ran into was the Options button in the main menu would open what looked like the in-game pause menu, but if I went back to the menu it would bring up the death screen and I would get stuck :(