This is a two-seater sports car that was produced only between 1936 and 1941. Jaguar’s marketing claim at the time was that the car could reach 100 miles per hour, which is where it got its name. It features a 2.5-liter inline-six engine, producing around 100 horsepower (later, when the engine size was increased, output reached 125 horsepower). In addition to being one of the most aesthetically beautiful classic sports cars, this model is also extremely rare—only 198 units were produced with the 2.5-liter engine. The rarity has led to a significant increase in its value at auction sales. Price: $500,000.