Multiple system atrophy is a complex condition that is likely caused by the interaction of multiple genetic, environmental, and lifestyle factors. Some of these factors have been identified, but many remain unknown.
Mandatory Seatbelts According to the U.S. Department of Transportation, in July 1984, New York State passed the first mandatory seatbelt law in the nation, followed by New Jersey, Illinois, Missouri, Michigan, and New Mexico.
Nash was the first car to offer factory-installed lap belts, bolted to the car frame, in 1949. Some customers purportedly tore them out and cut them off with razor blades. Of the 48,000 cars bought with seat belts, only 1,000 reported using them routinely. In 1950 the option was removed.