The question needs to be answered in two ways: A: What would you rather drive, and B: what can you actually drive right now.
For me, I would rather drive an electric car that physically drove and acted like a standard VW Jetta. The handling, the features, the safety, the sheer positivity of that car is unparalled for something I need to do every other day in order to make a living. Electric motors powered by renewable energy are superior in terms of total efficiency. However:
The car I want to drive theoretically and the car I can currently drive are different here in the USA. Turns out the LA Auto show rated the new TDI Jetta (diesel) tops in green cars. It's a diesel, could run on biodiesel (waste grease stock), and drives like a dream. No need to wait, no battery issues, and recycles waste grease that would fill up a landfill otherwise.
Hybrids come in a close 2nd, but still use war-tainted petroleum to run unless you retrofit the thing for an extra $10,000. Still, even at $30k, it's what we have to do if we absolutely need that kind of size, gusto and form factor. A normal station wagon that happens to be a hybrid would be superior, I don't need a hatchback so much as a wagon, and I don't need a mini-SUV either.
Full electrics are just not ready en masse for prime time. My sister drives a Zenn, and her batteries had to be replaced ($$$), it can't truly seat more than 2 adults (new kid on the way won't fit with baby seat), and she has to charge it up all the time, often at other people's houses (inconvenient).
Fuel Cell and Hydrogen cars are not remotely available, won't be viable for at least 3-5 years in full production, and are still dodgy in my mind regarding fuel extraction. Not even on the table in this discussion.
If you're going to combust, do it with waste grease in a diesel car, or the upcoming algae. If you're going hybrid, make sure the size car fits your needs and consider battery upgrades in the near future. If you're going electric, it's likely going to be useful only in a small-run capacity as a second car. Unless you change your lifestyle to hyper-local and have only 2 people in your household, it's going to be a stretch. If you're going fuel cell or hydrogen, you must by nature be the governor of California....
Great question, no matter how you slice it, vehicles are one of the most direct ways we can harm or help the environment every single time we drive (or don't!).
Aaron Campbell
Campbell Energy LLC
glowplug@comcast.net