They shouldn't be in traffic in the first place, for starters.
True, but then again, automobiles shouldn't be driving into crosswalks when I've got the light, but that happened to me today - in fact, during the time since I wrote that last comment.
Today's incident wasn't a big deal, because I was watching the driver, and I could see she was looking only at oncoming traffic from her left, while I was on her right, trying to cross in front of her turn. So I waited, and resisted the temptation to slap the side of her car.
But that's also a scenario where the Elio would have been a bit more of a danger. If I'm watching the driver, that protruding wheel is only in my peripheral vision. That's different from a regular car, where the edge of the car is between us and easier to identify.
So it's a risk - the hard part is quantifying how big of a risk it presents.