[Bicycle Bob]

Velomobiles do accelerate slowly, but for a highway run, that is not much of a problem. A pedal-electric hybrid is most desirable for stop and go or hilly driving. With a bike in the city, you pedal and coast about half the time each. A velo coasts so well you wind up doing short, hard sprints and a lot of coasting, which feels miserable.
A commuting cyclist will not get tired, he maintains a comfortable effort and pace throughout the ride.
Footpaths are for pedestrians. Bike paths and lanes are often so badly designed and maintained that experienced cyclists prefer the regular roadway. Riding in traffic is a skill. A mirror mounted on your helmet is a great aid.