Hi, I'm looking to purchase a 2016 Model S 90D (ap1) from a private party. The seller never added any ap software features during their ownership. I read that now basic ap features like lane assist are standard and do not cost anything extra but some places indicate that there is a cost. Can anyone clarify if I get the basic ap features at no cost? That is all I would be interested in since the car doesn't have ap2 or 3 hardware anyway. Thanks.