Even if electric hippie-heaven futuro cars aren't your style, you should still consider picking up a hybrid during your next new-car shopping trip. The 2008 Chevrolet Tahoe Hybrid (starting at $50,490) is the world's first two-mode hybrid SUV. (A GMC Yukon Hybrid is also available.) Offering up to 50% better city fuel economy over the non-hybrid Tahoe, the eco-friendly version has an estimated MPG of 21 city/22 highway for the 2WD model, and 20 city/20 highway for the 4WD model. Both pack in a Vortec 6.0L V8 engine with Active Fuel Management technology, which automatically shifts from 8 to 4 cylinders when less power is needed.