I know that those are great for saving fuel and money instead of buying a regular motorcycle or car but too many times people .....try....to jump out there in traffic and I have seen a few wrecks caused by them.
I have seen a few on the highway driving 40 in a 60 mpg zone, not only dangerous and stupid but they are risking other's lives too.
I have nothing against them, just their stupid owners and drivers.
Driving in city traffic is ok but not on the highway, especially if what you are riding can't hit the speed limit or even 10mpg under.
It is hard to see them a lot of times, especially after dark, those lights should be a lot bigger.