It has three rows of seating, standard all-wheel drive and is manufactured in America. Oh, and it’s a BMW. The X7 is the largest vehicle BMW makes. It’s ready to haul your clan in luxury, as long as you have $75,000 for a base xDrive 40i model. Tom Voelk drove from Phoenix, Arizona to Las Vegas, Nevada with Top Gear Magazine writer Paul Horrell. And they talk politics! And they can’t find the key…