Interesting - I've never seen mats for seat backs - how do they stay on when the seats are in their upright position? Or do you manually put them down when you fold the seats down?
I think the key here will be 'longevity'. Lots of jumpdrives should work just fine if they meet the minimal Rivian specs, but the real question is how long will they last when having to deal with multiple read/write accesses across its memory, overall degradation, etc. Most jumpdrives aren't...