Of course it matters, but not much. American car export is not very important. The flow is in the other direction. There are more European cars in USA than American cars in Europe, and then there's all the Korean, Japanese and Chinese cars all over the world, all import. A little UK in there too.

The American automobile business is a hollow shell of past dreams. Grossly speaking: Nobody but Americans buy American ICE cars and they also don't themselves.

When the foreign car manufacturers switch to electric engines, so does USA, unless you desperately want to drive a '98 Pontiac Sunfire baby.

People worldwide buy American Tesla, though they're produced in China and Germany or wherever, but at least it's still electric, so..