February 1, 1920

A few milestones in automobile history,  from  Two-Lane Roads.com :

1900
First automobile ad - Saturday Evening Post
First steering wheel in place of tiller.
First drivers license issued - to Harold J. Birnie in New York City

1901
Oldsmobile includes a speedometer on their cars.

1902
American Automobile Association organized

1904
First school for automobile mechanics - Detroit

1905
First cars sold on installment plan.
First car reported stolen. (St. Louis)

1909
First rural mile of concrete - Wayne County, Michigan

1911
First electric starter - Cadillac
First Indianapolis 500

1913
First moving assembly line - Ford
Ford produces 1000 cars in one day

1914
First stop sign - Detroit

1921
Lincoln comes with standard turn signals

1924
One in seven Americans owns a car

1930
First cars wired for radio

1937
Gearshifts move from floor to steering columns

1942
Civilian car production halts for World War II
Gas rationing begins

1945
Passenger car production resumes - July
Gas rationing ends - August

1949
First car to start by turning the key only - Chrysler

1950
First tinted glass - Buick

1951
First automobile power steering - Chrysler

1953
First fiberglass body - Chevrolet Corvette
Auto air conditioning

1955
Record players - Chrysler

1957
Paper air cleaners replace oil bath
Retractable hardtops - Ford
Cruise control