Sotheby's announced this week that an anonymous collector had put his entire exotic portfolio up for auction this summer. The crown jewel of this collection is a 1998 McLaren F1 LM hypercar.

"The F1 is a technological tour de force and a real triumph in terms of packaging and design," McLaren Automotive executive chairman Ron Dennis said in a statement in 2010.

"Whether endurance racing or on road, it is supremely fast, agile, and yet comfortable. Its styling is enduring and will never fade."

The car up for auction is one of 106 McLaren F1 vehicles ever built and just one of a handful in the "LM" specification. According to Sotheby's, the ultra-rare British exotic is expected to fetch between $12 million and $15 million when it hits the auction block this August in Monterrey, California.