Mercedes' Electric G-Wagen Can Turn in Place, Barbarically

Having a car that could do a zero-turn—that is, turn in place—would come in handy in certain situations, particularly if you have a narrow driveway. Zero-turn lawn mowers can easily accomplish the feat because they only have two drive wheels, so it's a simple matter of having the wheels rotate in opposite directions: Cars on the other hand have four wheels, so to accomplish a zero-turn would require all four wheels to pivot. The cost of engineering, manufacturing and maintaining such a...