In a Todd -like move, I’ve been thinking lately about alternative energy sources, especially when it comes to powering a car. There are a lot of technologies out there which could make cars more efficient and eventually eliminate our dependence on oil. But none of these technological advances is yet ready for mass production, except for hybrid cars and, to a lesser extent, ethanol. So let’s brainstorm a bit and think of some other ways to get your car from point A to point B. We could go back to animal power, only instead of having a horse pull you along you could have a hamster running in a wheel, which would then generate electricity. Then your fuel cost is basically feeding the hamster. Of course, there are two downsides: first, the animal-rights people; and second, the hamster would probably have to run for six months straight in order to give you the power to drive out to your mailbox and back. (What? You don’t drive out to your mailbox and back?) What if we figured out a way ...