Classic cars have been one of the fastest appreciating high-value assets, increasing in price faster than art, wine, property and even precious metals. 1964 Ferrari 275 GTB/C Speciale - $26,400,000 Sold: 16 August 2014 Auction: RM Sotheby's Monterey Sale, California, USA Just three 275GTB/C Speciale Ferraris were ever created by coachbuilding specialists Scaglietti. 1956 Ferrari 290 MM - $28,050,000 Sold: …