No they did not. Not unti the late 60's early 70's.
1950
It was the first modern seat belt that was put in cars by Volvo in 1959-1960
1955 In 1955 Ford offered for the first time lap belts as an option on it's cars. Saab was the first car manufacturer to introduce seat belts as standard equipment in 1958.
Not if they did not come from the factory with seat belts. If they came form the factory with seat belts you are required to wear them.
In the year 1949 seat belts became an option in cars.
in 1970
In the US seat belts began to show up in the later 1950's.
Yes
no
1966
Seat belts protect you from the impact of a collision, not from speed or acceleration.
The Nash started offering them in 1949 and Ford followed suit in 1955. The invention of seat belts happened in the 19th century around 1885 when the first US Patent was issued.