The 1933 Indian Four was one of the most powerful two-wheelers of its time, as well as one of the most expensive ones. It boasted an estimate 30 horsepower from its air-cooled, in-line four cylinder powerhouse, and could reach a top speed of 75 mph. Also, it came with a solo seat, laced wheels, rider floorboards, a hardtail rear suspension, and a large, 4.6-gallon fuel tank.