An electric 2g.

I've been considering this for some time. Reason being: Electric transportation is our fate - all other alternative fuels are just a distraction. rant mode on:

-Ethanol will die (creation from corn requires just as much energy input from oil as it outputs. We cannot mimmic Brazil and their reliance on sugar cane ethanol, b/c we have a much greater appetite for energy)
-Fuel cells will die (The overall efficiency does not make sense when you factor in the energy needed to produce hydrogen, ship it, and of course the safety issues involved).
-Hybrids will die (the cost of ownership makes offers no incentive over standard combusion engines)
-Biodiesel cannot be created in enough volume to replace gasoline.
-And finally, most importantly crude oil/gasoline will die. We already hit peak oil, and the worlds growth in demand is on an exponential slope. We will see $200/barrel crude, it is inevitable. Prices will keep rising until your average Joe rejects SUVs, V8s, and eventually even small displacement internal combustion engines.

Electric transportation is proven (see Tesla, Rav4 EV, countless electric motorcycles) though expensive (READ: not economical). That's been the limiting factor. Until now. With LiFeP04 battery technology, it's possible to have enough kWh to get 90% of Americans to work in back for less than $10,000 in batteries. If we can get to $300/kWh than oil reliance becomes history.

That's half the story. The other half is the route we pursue to produce electricity. The naysayers/politicians are uninformed and ignorant of the numbers. While electricity does come from a power plant, the overall efficiency from production to traveled mile is by far superior to oil. We don't need to go nuclear, we don't need coal, and we don't need highly theoretical off shore wave harnessing plants/what-have-you. Just solar. In a place that gets plenty of sun, like the south west U.S. (looking at you Driggs! :wavy ) We can use our existing power grid to do it too - just charge your car at night. If our political leaders knew where to put out tax money, we'd already be energy independant by living off the sun. Even at today's current PV cell prices, we could have 70 square miles of solar cells (enough to power the entire U.S.) for less than our exisiting national debt (before Obama made it even worse).

rant mode off
The 2g is perfect suitor for an EV because it is aerodynamic (Cd=0.28-0.29), and with the iron block/fuel system/cooling system/exhaust/transmission/all other combustion related components removed, is relatively light weight. Replace all that with a controller, electric motor, and 10kWh worth of batteries, and you have a daily driver. If you want a 300 mile range per charge, you'd have pay for the 50kWh of battery storage - which is too pricey still.