one thing that is often lost on modern audiences watching the Back to the Future series is that, in 1985, the DeLorean was well known for being a shitty car. The only reason the DMC DeLorean is remembered fondly today is because of BTTF; had the movie never happened, it would’ve been one of those fancy cars lost to time and remembered only by car nerds (trust me, there’s examples of this). Potentially the primary reason for choosing the DeLorean to be the time machine is because of how notoriously bad it was. We even see Marty question Doc’s choice to use a DeLorean, and at the climax of the first movie we see the car fail to start when Marty is lined up to drive towards the wire. The DeLorean was known for being overly heavy, clunky, prone to breaking down, and annoying to maintain.
Basically, what I’m saying is, if Back to the Future was made today, they’d use a Cybertruck.
