Cost to operate the vehicle (gas) isn't the whole story. How much do these vehicles cost to insure and is it comparable with a gas car at a similar price point? (Not being snarky, just curious)
The big problem for Model S insurance is that the body is aluminum, which is a lot more expensive to repair, especially since Tesla wants to exercise a great deal of control over the whole process. This seems to be compensated for by the excellent safety, which reduces potential medical costs.
If Better Place had worked out, it would have let people shift the battery ownership elsewhere. But it didn't.