Auto correspondent Casey Williams says BMW's 840i is beautiful, comfortable, and when asked, brutally fast.

Gone is the previous-generation's optional six-cylinder engine, replaced by a new 2.4 liter turbocharged horizontally-opposed four-cylinder that delivers 260 horsepower and 277 lb.-ft. of torque.

The first generation Traverse didn't stray far enough from its mini-van predecessor for some. Auto correspondent Casey Williams says the new generation is a more formal two-box crossover that takes on styling cues from both the compact Equinox and full-size Tahoe.