Rare McLaren P1 Experimental Prototype Up For Grabs With a price tag of $1.15 million when new, and a limited production run of just 375 original examples, the McLaren P1 hypercar is as hard to get your hands on as it is desirable. But one example has recently come up for sale, and though it may look like just another used P1, this one is special. Available through Tom Hartley Jnr. in the U.K., this 2013 McLaren P1 is one of just 14 “Experimental Prototypes” that were built prior to the 375 unit production run. These 14 cars were tested extensively in some of the most extreme conditions â” from Death Valley to the arctic â” prior to the launch of the production model in 2013.