Used cars respond to market forces too. If new cars become much more expensive, used cars will become much more expensive. This isn't even a theoretical idea.

Used cars respond to market forces too. If new cars become much more expensive, used cars will become much more expensive. This isn't even a theoretical idea. The exact thing happend in 2020-2021 when you couldn't buy a new car. This is what many don't understand about tariffs in general: you put tariffs on foreign goods and anything exempt will simply raise their prices to match.