Yes there were Fords, Pontaic etc.
The first production car was made in 1889 by Karl Benz of Germany and little later came the Stanley Steamer ( this is the same man who built the famous Stanley Hotel in CO) a car that ran on steam. By 1908 Ford was producing cars for the American Market. WW2 happened in 1939 so by this time there were many car companies producing cars in the United States.
Uh, Duh. There were tanks, of course there were cars. They had planes also!
yes
Yes, there were.
World War 2 cars were much tougher than today's cars, and today's cars can go much faster, there are more differences to them too so these aren't the only two differences.
PROBOBLY because we defeated them in World War 2
yes
No.
Any body that could or wanted to.
The Volkswagen Kubelwagen .
I DONT KNOW I THINK CARS AND BIKES
Steel and labor were needed to support the war effort
Yes
This question makes no sense. Box cars and cattle cars were around long before world war 2. The Jews were taken in them to the concentration camps.