Depends - as with many things, it is a grey area. You can do it, but in the event of an accident it will be 50:50 in terms of fault at best. Anything under 30mph differential is generally easy enough to cope with if you are alert as a biker, but you learn to watch car tyres for starting to turn...
Do it in two pieces, 45 degree angle from the corner down. So the top piece and the side piece are separate. Even if you were able to do this in a single piece by 'forcing' the veneer into shape through a vacuum or cauls, because of the curve your grain is not going to run true