All car manufacturers suffer from peak car. The sales often dip, and the industry goes through fad cycles of selling fuel efficient and then inefficient cars. 70s fuel crisis gave rise to Toyota and alike to outsell pickups, but then pickup and SUV sales went up because those were taxed favorably classified as light trucks.
I predict once boomers die, the electric revolution will happen but not as Tesla but as electric RVs and bikes. The later generations should create new cities and new industries. Unfortunately battery tech is extremely complicated, and will probably be centralized and dominated by China. It is also unclear what the energy source will be, but batteries are omnivorous, so it doesn't matter much. Natural gas is plentiful, and there's also plenty of coal.
The US is still a dominant player in heavy diesel machinery, so old boring industry is in no trouble.