Essentially a wagon version of the old G37 sedan, the QX50 is looking pretty ancient by now. A redesigned QX50 will go on sale this fall. It will be larger and have more up-to-date safety gear. Still, the current QX50 has agile handling and a steady, taut ride. The powerful 3.7-liter V6 delivers strong acceleration, but this small pseudo-SUV is very cramped inside. The rear seat is tight, and the cargo area is tiny. Styling has somewhat compromised the rear visibility. The interior is well-assembled, with upscale, soft-touch materials. Controls are daunting at first, but they're ultimately logical. The optional lane-departure system works with the ESC system to keep the vehicle on course.