Actually, and I mean this in all seriousness, the g/f and myself were nearly knocked down by one of these yesterday as we were coming home. He came barrelling round the corner and up onto the pavement at such a speed (I reckon he must have got nitrous added to his thingy) that he had to "stand" (ahem) on the brakes to avoid ploughing into us.
Maybe I should get back on the roads after all!