It was, you can see his scar when he has a close shave on the sides of his head ...

stavros · on July 26, 2019

That looks odd, the scar doesn't go that far. Plus, you can have implants without a scar now.

hizanberg · on July 26, 2019

The scar is at the bottom (just above the ear) and would go either half way or all the way around and end at the same point on the other side.

Yes Follicular unit extraction (FUE) is possible, it has less yield than strip harvesting but if you don't need to maximize donor area it's a good option to avoid a scar (you'll still have micro scars from extraction area but it's much less visible).

But in Elon's case, it's clear he underwent strip harvesting for at least 1 implant.