Yes, there are many US citizens who have cars, but there are many US citizens (like those who are children, those who can't afford cars, etc.) who do not have cars. There are over 250 million registered motor vehicles in the US.
US and Canada
Yes they do.
Bears, wolves, hockey teams, Ford cars, White trucks, Walmart stores, ranches, wild horses, rodeos, armed police, and zillions of other things.
I do not believe there is any prohibition against it. If Canadian citizens can (and DO) own property in the US I have every reason to believe that US citizens can own land in Canada.
Some use an outside source to finance the "flooring" of their cars, and some pay cass for them. And some let the factory finance the flooring of the cars. When I was with Chevy, they wanted us to finance through GMAC. Since we used an outside source to floor our cars, we did not receive all of the incentives, that were offered. Result, you paid more for some of our cars.
the war was funded through taxes on U.S. citizens and corporations.
They are not. Most Canadians are very happy they are not US citizens.
To provide funds to finance services that benefit and protect the greater good of all citizens.
canada
Yes, provided they have a valid driver's license. Many people in the US on student visas own and drive cars.
I tried many times but cannot do it. It seems to be only for US citizens.