Betcha can't drive just one ...

This is a low-fat potato chip.

It's the Cadillac Escalade Hybrid, but it just as easily could be the Chevrolet Tahoe Hybrid, or the Lexus RX400h, or the upcoming hybrid SUVs from Dodge, or full-size hybrid sedans like the Lexus LS600hL or GS450h.

All of them use hybrid systems to improve their fuel mileage and reduce their emissions, and that's a good thing. But all of them have hybrid systems inside very large, very heavy (and, so far, very expensive) vehicles. And I'm betting that the majority will carry one or two people at the most, and maybe the odd bit of cargo that won't come close to the vehicle's capacity.

Hence, the low-fat potato chip, a food-like object that could only be invented in North America: when confronted with the problem of excess weight and poor dietary health, we buy versions that are slightly less bad for us, rather than reach for an apple or even question if we're hungry at all. Likewise, rather than buy a smaller vehicle, or walk more, or combine our trips so we drive less, we buy the large-by-huge SUV with the slightly better propulsion system. All the taste, a bit less fat, and the smug feeling that yes, we're making the planet a better place, one battery-powered gargantua at a time.