4 wheels and a bumper.
I love motorcycles a lot, but refuse to drive one to work, due to the speedbump factor. Motorcycles are neraly invisible on the roads. Avoided many accidents that nearly occured because driver didn't see me.
Got tired of it, after witnessing too many friends become speedbumps because they weren't as agile at dodging the merging Dodge as me.
I'd rather be alive and able then not, so my mode of transportation to work is a car.
When I ride motorcycles, now, I do it away from cities on roads that little traffic.
The volt is in Yuma, AZ doing high temp testing as we speak. Will see how it does.
If you watch the web cast that GM had, they addressed this question in the Q&A. Cold weather testing has been going on and the 40 mile range on battery alone already had this factored in. Plus there is a really cool display that shows power utilization. Don't forget that it has a generator to kick in if there is a less than 40mile range.
It's a naive, domestic operating system without any breeding, but I think you'll be amused by its presumption.