I commute about 30-35 miles round trip every workday, always by myself because none of my coworkers live close enough and have a compatable schedule for car pooling. A single seat car could work for me, if it could meet the following conditions:

1. It has to be able to handle bad weather and snow. That car you showed in the first picture would be stopped by the first couple inches of snow (that air dam across the front would act like a snow plow). I live in Colorado. Being able to drive in snow is important. I'm not interesting in having a good weather car and a bad weather car. Sometimes (like a week ago Thursday), the weather is good when I go to work and turns really bad during the day.

2. It has to be able to accelerate fast enough to safely merge and flow with traffic. Like I said, I live in Colorado, where courtesy is considered a sign of weakness and running red lights is a popular pasttime. The ability to accelerate quickly is not only nice when merging on the interstate, it possibly saved my life once when an idiot in a van ran a red light doing at least 40 MPH and was about to broadside me in my door.

Ultimately, the utility of that car looks marginal at best. My Honda CRV is a gutless SUV-wannabe, but it does well in snow and gets nearly 30 MPG in my daily driving. My wife and I use it for most of our in town driving because it gets better mileage than her vehicle, is easier to park, and can still carry a fair amount of groceries and other stuff.

My next car might be something like a Civic hybrid or some other small vehicle that gets good mileage. I'll have to be convinced that it'll handle snow, though.