You're worried how the paint and resale value of a Model 3 will hold up if you have to push aside some hedges on narrow lanes and get some micro-scratches in the clear coat??
Oh, my! I never knew I was hanging with such stuffy, straitlaced Tesla people! Have some fun and live a little! Tesla are not one-of-a-kind art masterpieces; they are mass-produced production cars meant to be used hard and put away wet! Just another tool in your toolbox, and what a fun one at that! Don't waste your money on petroleum products to protect the body, that's what the paint is for! First principles thinking. Just wax it a couple times a year, wash it when it gets too filthy and then give it a good buffing and a wax before you sell it. It'll look great. Better yet, pay the kid down the street to do it, he will have a story to tell his friends and a few more bucks in his pocket.
It's gonna be worth whatever it's worth when you sell it. Even one scratched to hell and back is going to be worth good money after you've had your way with it. It'll be yours, enjoy it fully, life is too short to worry whether it's worth a few hundred more or less. Try not to dent the body panels, then you will have a real road warrior! Sure, dents can be fixed but it's far better to avoid them in the first place. But scratches? Have at it! I take mine off-road all the time and beat up the alder saplings and it still looks new!
Buy a Model 3 and live a little, I recommend the Performance version but a regular AWD will be a hoot too! Open it up now and again on some of the more abandoned rural routes, push the hedgerows aside as needed to be a good brand ambassador, give them plenty of room so they don't have to fret about scratching theirs while you smile and wave and plow through that hedge. The mirrors will self fold if they encounter a stiff enough branch. Don't worry about the paint, it'll buff out real nice and if you get a deep one, who cares? Cars are not investments in anything but transportation and a bit of fun when going about your day. Enjoy it, don't live in fear! I bet it'll still be worth at least half of what you paid for it after you've had a few thousand carefree adventures in it. Go ahead, cost it out, it'll amount to a few bucks per day any way you slice it, might as well feel liberated while you're having fun!
Life is too short to fret about the little stuff!