Maybe I am the only person who didn't know this, but when Tesla registers the car you do NOT get the title or the plates upon delivery. We are registered in Wisconsin and waited almost six weeks for the plates and title. If Tesla had provided the title with the car (after I had already paid 100% of the price) I could have walked into our local DMV office and walked out an hour later registered and with regular plates.
If you don't mind driving around with a piece of paper taped to the rear window and no title then you will be OK with Tesla doing the registration -- otherwise you should try to get the title when the car is delivered and DIY.