It's about time somebody modded a Volt! With a claimed Cd .28, GM didn't get everything, and I think there's room for improvement. The wheel covers look great; you may be able to block some of the lower grill as well, but you'll need a Scangauge to keep an eye on the various coolant temperatures, assuming there are x-gauges for that. For the mirror delete, the base of the Volt mirror looks fairly large, but the nice thing is whatever you fab up can be painted black and no one will know the difference. I used an aluminum piece, but my car is silver: