I appear to be a big fat guy on a bicycle who just climbed out of a hole on Chernobyl.
Of your options above, I am both, but 99% of the time I'm a vehicle driver. On my commute there is a 200 yard stretch where I must ride a sidewalk to reach the MUP, otherwise I'd have to ride 3 miles, taking full lane, on a major Parkway where motorists hit each other at least 2 times a day.