Are they really that nice? I've been in a few but never owned one. I hear a lot about fit and finish issues unbefitting a car of that price range.

What does a Model S get you that an S-class doesn't, or a Model 3 against, I don't know, an Audi A4? Is it just all about that electric drivetrain? I don't yet have a strong preference on electric vs. ICE, but I would gladly pay more to have a car without the "slap an iPad in the middle for every UX" design of the Tesla.