Comparing hybrid sedans is a little like pitting Rush Limbaugh against Al Gore in a Thunderdome-style death match. The fight itself might put you to sleep, but the results, which speak volumes about the commitment of the combatants, will have everyone taking notice.

Despite the politics, now is a good time to compare hybrids. Environmental factors, ever-increasing fuel costs and the simple need for social responsibility are creating a market ripe for the hybrid. Manufacturers are responding with midsize sedans — the most popular car segment in the largest car market in the world.

We've assembled the three big players in this segment: Nissan's 2007 Altima Hybrid, Saturn's 2007 Aura Green Line and Toyota's 2007 Camry Hybrid. We left out Honda's Accord Hybrid since it's been discontinued for the 2008 model year. We're simply looking for the best car by factoring in fuel economy, performance, price and usability in an all-out slugfest of green.

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