wow, that's interesting, because motorcycling tends to make people so much better car drivers. I guess the speed makes all the difference (i.e. learning where to look) between what you learn on a m/c and what you learn on a b/c.

I'd have to say no.

As far as lessons the other way, I know that motorcycling definitely made me more aware of lane positioning on a bicycle, taught me where to look, and helped me learn to lean further while cornering (even though the body positioning is TOTALLY different and I'm still adjusting to that).