What if your initials are DB?

Then you decide that no production car is good enough for you and you should build your own. The result is the Speedback GT by David Brown. Better pictures here. Yours for just over GBP 600k. For that price, you don't have to visit something as vulgar as a car dealer. The big man himself will take the ferry from England to show it, in whatever marina you and your yacht decide to be.

Unfortunately the deal bounced off when it became apparent that it doesn't fit on the helideck.  First a bigger boat...