So many covered human-powered vehicles like this have been designed and somehow almost none make it to market and those that do are too expensive to gain popularity. Something like this could resolve the rain issue for bike-commuting and, with a small air conditioner, would be cool to ride in.

Vollta Student Vehicle Projects

Which of the following factors do you think would weigh most strongly for people against using such a vehicle, even if it meant being able to drive in the bike lane and avoid congestion:
1) safety concerns of riding in a small vehicle without crash protection
2) drawing attention for being 'out of the ordinary' on the road
3) not fast enough
4) concern for reliability problems, mechanical failures, etc.
5) other issues?