19?? The first year the Ford sedan had the headlights incorporated into the fenders
19?? The first commercial in-car radio
190? The year the Thomas Flyer won the first New York to Paris automobile race
19?? The year the first generation Hyundai Sonata was introduced
19?? The first year that the Cadillac Model 30 was fitted with an electric starter
19?? The year that Duesenberg first started producing their Model A automobile and although it was released a year later, it was the first production vehicle with four wheel hydraulic brakes
19?? The year Cadillac introduced the first clashless Syncro-Mesh manual transmission
19?? The first year Ford introduced the engine oil economy analyzer, a light on the instrument panel that lets the driver know the condition of the engine oil
Most of the information came from Wikipedia, the others from Auto News, Ford list of firsts and other like sources
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