>While it might take a hundred hours to do a restore of a normal car Tesla can swap a pack, some body panels, electronics and interior in a days labor.

Any source for this?

I spend some time on the Tesla forums. There are threads of people get into minor collisions and receiving estimates of 100+ hours of labour to replace some front end parts and paint, along with bills over $20,000[1][2].

So, I don't think it's as simple to replace these parts as you suggest.

[1]http://www.teslamotorsclub.com/showthread.php/26326-Cost-of-...

[2]http://www.teslamotorsclub.com/showthread.php/39325-Owning-a...