When you get to the upper echelons of the automotive market, the luxury cars get more enticing, but the choices get slimmer. For example, if you're looking for a stately four-seat convertible and have six figures to spend, you'll probably be looking at a Bentley Continental GTC. But if you've got a little more cash on hand, you may be enticed by the Rolls-Royce Phantom Drophead Coupe.

Bentley used to play in that league with the Azure convertible, and was surely displeased to see its customers consigned to arch-rival Rolls-Royce. Intending to get those customers back, Bentley has announced plans for a new top-of-the-line cabriolet of its own.