Ha! rofl Well grats! I suppose spontaneous car sex is a heck of a start!
If he's willing to try, that's wonderful...I was hoping he would. I wasn't optimistic about it, but I was hoping. Just give him some time, and be patient. He can't feasibly jump from "vanilla" to "sundae" too soon, to keep with the ice cream analogy. Gradually lead up to things, and teach him.
I wish you both the best, and good luck!