If you're fortunate enough to have the means, there are some seriously enticing supercars on the market. We mean the kind of luxury automobile that will make you feel like the million bucks it can sometimes take to buy one. But if you've got rock-star cash, the kind of money that would humble the GDPs of some small countries, you can get the company that produces these exotic machines to make you one entirely to your own specifications.

One buyer recently commissioned McLaren Automotive to build him the X1, a ponderous but exquisitely-crafted supercar that makes the same company's MP4-12C on which it's based look like a rental car. But though his identity remains shrouded in mystery, he (or for all we know, she) is not alone.