Yes, but you are still paying $x. It's not savings and they should not mislead people in this way. You can have the _actual_ cost posted _and_ your "potential savings" but they should be separate.

FWIW: I've owned a Tesla for 6 years now and I'm pretty sure I still spent more than I would have buying like a Prius or Volt or one of the other hybrid vehicles I was looking at at the time.