Only time a used car can make near the same (or even more) than a
new one is when a new model is in great demand but short supply. Pretty
rare.

Agree its rare but its happening now with the UK spec Mustangs, 8-12 month waiting list so good second hand ones selling for same or more than new list price. What you'd be paying for is getting it now, not in 8 months. (In the end decided 15-20mpg and loose rear end traction was not for me)