As someone who has the privilege to pay tax on a vehicle I already own (a whopping 4% a year at that, hello VA residents):
If you plan on buying FSD, buy it AFTER the car has been delivered. The state ‘personal property tax’ is based off the sticker price.
4% tax on a $50k car (no FSD); $2k/year
4% tax on a $60k car (w/FSD); $2,400/year
Waiting to buy FSD until after delivery will save you 400/year, ~$35/month in taxes as the $10k is not factored into the value of the car come tax time.
I’m still kicking myself for not realizing that earlier!