Car: Shelby GT350 H
What makes it special: For 1966, the GT 350 lost its Mustang tag and was marketed simply as the Shelby GT 350. That year also saw the introduction of non-white colors, including blue, red, green, and black. Other changes included special rear quarter-panel windows replacing the factory extractor vents, functional brake scoops on each side, and an optional Paxton supercharger. The battery was no longer relocated to the trunk for 1966, and the over-rider traction bars were discontinued.
What made it famous: The late Carroll Shelby made a deal with the Hertz Corporation to produce a special line of G.T. 350's for rent, and after their rental-car lives were done, were returned to Ford, refurbished, and sold to the public as "GT 350-H" models. Most Hertz cars featured gold LeMans stripes and rocker panel stripes. The first 85 Hertz cars were available with 4-speed manual transmissions and Hertz advertised them as "Rent-a-Racer" cars. Hertz ordered the last 800 models with black paint, gold stripes and black interior, as well as automatic transmissions.
Why I would want one: They are a piece of automotive history. Factory race cars that could be rented out for a weekend of high speed fun, and returned afterwards. Plus, the black with gold stripes paint option is very classy.
Fun fact: During rental, these cars were sometimes used as production class cars at SCCA events, and were rumored to have been returned to Hertz with evidence of roll bars being welded in. When the Hertz cars were returned to Ford to be prepared for sale to the public, the high-performance parts were often "lost" (presumably at the manufacturer) before final sale.
( 1965 Ford Mustang Shelby GT350H photo from barrett-jackson.com )