I seem to remember this game as buggy buy on water (and with rockets!!). You could jump on logs and drive onto ramps on the side just like in buggy boy. Or am I mixing this up with something else?
One of my first games I have ought on my own on the ST. And it was worth its money! The grafix is nothing else but some race-game grafix which have changed colours to make the street look like a river. But the soundchip-music is very good and the gameplay is very good, too. It needs some practising to pass all levels.