Up here (in Canada, eh), you don't pay taxes on a lease up front. Likely because you don't actually OWN the leased car. You pay tax on your monthly payment, which is (I'm assuming) what you're stating here. In any case, the Apple program is not a lease, so lease discussions aren't relevant.
However... If you buy that $75,000 car up front, you pay tax on the entire amount. If you trade that car back in, the dealer pays you tax back on the trade in value (I believe). So in the end, you only pay taxes on the difference between purchase price and trade in price. Theoretically, Apple COULD do the same thing, but it sounds like a headache in accounting and government jurisdictions.
However again... Lots of people sell the used car on their own, and never get that portion of their tax back. Too bad, so sad...
C