Thanks to several technological tweaks, yes. First, a more-efficient supercharged 3.0-liter V6 replaces the V8. The gas engine is paired with a 47-horsepower electric motor, and the two are linked with a decoupling clutch, so either one can run the vehicle independently. The motor is capable of handling the load alone at up to 37 mph. Together the pair flings the SUV from 0 to 60 mph in 6.1 seconds. Yet the hybrid gets an estimated 20 mpg city and 25 mpg highway, a 25 and 14 percent gain over the non-hybrid version. It also does tricks: At up to 97 mph, when you take your foot off the accelerator, the engine disengages from the drivetrain and shuts down. Here's how this "sailing" mode lets you briefly zoom without any power at all.