Next week I'm driving from Minnesota down to Kansas to buy a used 2015 Model S P90D and bring it home. What's nagging me is Supercharging: once I've bought it from its current owner, will I actually be able to use the Superchargers on the drive back? I'd like to know how that normally works, and whether the car can be moved over to my account straight away. The last thing I want is to set out on the return trip and discover the car can't charge at Superchargers. I did a bit of googling and found nothing on this, so if anyone has pro-tips, I'd appreciate them!