Pretty confident that people buying $80k+ cars understand that new vehicles depreciate, and it's a loss we're willing to accept to have the latest and greatest. As mentioned above, I'd much rather finance the whole price of the vehicle at 1.5%, that's essentially free money and you can easily outperform it with relatively low risk S&P Index funds over the lifetime of the loan.
If you buy a LR @ $80k, put zero money down, at an interest rate of 1.5%, you end up paying $3,704 in interest over the life of the loan. If you put $16k down (20%), you pay $2,963 in interest, so savings of $741. Now, if you do the zero down, and put that $16k into an index, which on average returns at about 9.8%, you end up making $12,000. Minus the interest, and you're actually up $8,296...which helps curb that depreciation. This is why down payments are dumb if interest rates aren't absurd.