You can afford the car. But can you afford the chauffer? Because this is a limousine meant to be savored from the back seat rather than the driver’s seat. The G90 Ultimate is the bargain Bentley of the year. The Bimmer beater. The Rolls wrecker. Without so much as a single option to pack the window sticker, the G90 goes out the door for its base price of $71,850.