I watched something very similar to this hit at least 40mph (~65kph) down my 30mph (~50kph) limit road the other day. The guy did not have a helmet on and was in a light jacket and jeans with trainers.

It was as you said, a motorcycle with pedals - only ridden by more of an idiot than the people who ride around during summer on 600cc bikes wearing shorts and t-shirts (cause at least they have a crash helmet on)