there are industrial rated (ie, large temperature swing rated) flash cards. I have some sandisk industrials from work that I might swich over to (micro-sd card, so it does need an adapter).
most consumer drives are not rated for the temp swings that cars can see. that can be one failure.
another is all the writes that happen. again, junky consumer drives that are manufactured 'at a price point' will die due to all the heavy write activity. industrial drives have more spare 'sectors' and better wear leveling.j
you also have to be aware that every metal to metal contact can oxidize and cause connectivity problems. I hate having extra cables; just more failure points.
here's an industrial sd-card, expensive though it is!
https://www.amazon.com/Sandisk-Industrial-MicroSD-UHS-I-SDSDQAF3-008G/dp/B07BLQHVQD/
the ones we have at work were all black, not a white label. not sure how many grades they make. in fact, you probably don't want to buy from amazon, you want to buy from a trusted vendor, direct, if you can (memsticks are one of the most faked things; and if you buy sandisk from ebay sellers, 90% chance its a fake product. amazon is also becoming like this, sigh...)
finally, ext4fs does not need defragging; fat32 does. so if you can make your drive ext4fs (linux format) that will also help with file-based operation speed.
PS: anything marked 'pro' is probably still just consumer junk. same with 'high endurance'. industrial is what you want, for automotive rated applications (in fact, there's actually a catagory called 'automotive' but I doubt you'll easily find automotive-rated sd cards that you and I can buy in single unit qtys).
