Prohibition began and ended in what years?

As is the prohibition of marijuana.

Canada began to repeal their own prohibition just in time to export alcohol to the US. With Detroit separated from Canada only by the Detroit river, Detroit became a primary smuggling area for alcohol. Al Capone allegedly did a lot of business with the Purple Gang, which was based in Detroit.

and that is how NASCAR began

The Volstead Act was unsuccessful in so many levels. 🙄

Iron, moonshiners.