Is the Future of Cars Diesel and AWD?

Instapundit wonders, and I wouldn't be at all apposed to that.  MandaFern's Subaru is a treat to drive in just about any condition, and last weekend tooling down the interstate at 70 in the rain/sleet/snow mix wasn't any worse than driving my little Chevy in nice weather.  As long as they can manage to make the diesel run alright at sub-zero temps I wouldn't mind that either.