Why did you pay more than 6 BTC?
Because Tesla (and all electric vehicles) is one big ponzi scheme and clown Elon tricked many people by adding, then removing Bitcoin support from tesla website, and dumping bitcoin.
Everything about Elon is fake, but if some people like to waste money aka bitcoin on steel junk that will become useless soon, go for it.
I am in the same boat. I have a very low order number, ordered it within minutes of the prices being shown. I have the ability to configure in my account now, but don't want to spend $20k extra and lose the $7500 federal tax credit. In other words its $27k penalty to order now.
Of course someone just sold one for $200k plus.