Angbot and demand

As newly baked economists, I would be interested to see if you would notice that Porsche’s used car prices tend to go down after more and more Porsches are built and thrown onto the market, but this would have to be felt in the long term by a growing supply of used Porsches! After I estimate the demand for used cars for rather stable, the prices would have to go down in the long term! with good arguments of course gladly convince!