Where I live, 4x4 is mandatory and I need a fair amount of space for hauling gear, friends, dogs, etc. I recently bought a Chevy Tahoe under duress. I looked at a wide variety of 4x4 vehicles and, in the end, none was appealing. I get about 16-17 miles to the gallon, which is decent I guess for a brute like the Tahoe, but still pretty awful.
I'm a bit skeptical of all the "clean" technologies being shoved down our throats these days. There was an interesting article in Wired a few months back about global warming, etc. One of the interesting points it made, where cars are concerned, is how the BEST thing one can do for the environment is to continue driving one's old car - or buy one used. As it pointed out, one must drive a new Prius 100,000 miles to offset the energy used to create the vehicle (a lot of the energy used is for the very environmentally unfriendly and toxic batteries used in hybrids). So better to keep driving your old gas guzzler. The damage from production is already done.
Same with electric cars. Where's the energy coming from to charge the vehicle? Oil? Coal? Nuclear? It's not like electric cars are truly "clean." Sure, they don't produce any emissions, but production of energy to charge the batteries sure does! And then what happens if batteries aren't properly recycled? How much energy is used to recycle the batteries?
If Chevy comes out with a Diesel Tahoe, I'll switch. We've got a local biofuel company that runs a very nice gas station in town with Biodiesel, E85, and a snack shop full of organic foods and juices, etc. Not that biofuels are the answer either, considering that it often takes more energy to produce biofuels and biofuel production takes precious food-producing land away. But if the stuff is recycled veggie oil, etc., at least that's a positive step.
Off-topic a bit, but consider how much energy Google uses. A recent study states that two Google searches requires as much energy as boiling a kettle of water (not sure how much water was in the kettle). I read that Google's main data center uses roughly 1/3 the energy every year as the entire city of San Francisco. The more we transition to "cloud" computing, etc., the more energy we're going to use. And if we're not producing truly CLEAN energy, does it really matter if we're burning oil or charging our electric cars with energy produced by coal-fired plants?