The Jaguar XKE is said by many to be the most beautiful and best driving sports car ever produced. The cars were produced in three different variations. Series 1 cars were produced from 1961-1967, Series 2 from 1968-1971, and Series 3 from 1971-1974. The most desirable and rarest of all the cars produced are the early Series 1 cars that were equipped with the 3.8 liter inline 6-cylinder engine. If you are a collector of rare automobiles, this is the car you want and if you are lucky enough, you might even find what they call a “flat floor” car. In 1961, right when the XKE came into production, the first few hundred cars came with what is known as a flat floor, making them very rare and very collectible.