> The low end luxury market are engineers, doctors, etc. and they will seriously consider buying a minivan or a SUV or whatever instead.
I would say this is a big "it depends". I think I'm in that low-end luxury market. I paid 36k for my car, when all is said and done. I absolutely did not consider minivans or SUVs, and for one really big reason: I don't have kids. Kids aren't even on the horizon. When I look at minivans and SUVs, I think of mobiles that, while great people movers are, generally, not very fun cars to drive (there are some amazing Mazdas and Acuras in this collection, though).
I bought a Subaru WRX, because I like the way it feels; but, I am VERY excited about this new Tesla, and I completely believe that the next car I purchase, bar getting a huge amount of money that I can choose to not be practical with, is going to be an electric card, and is also probably going to be a Tesla.
I have a friend who owns a 90k Infiniti. He prefers luxury more than I do; but, he's 100% on the Tesla bandwagon and is very excited at the prospect of owning one. He'll be one of the first in line when they announce the price.
I have another friend, similar market. He owns an Audi ... A5? S5?
Barring my infiniti-owning friend, we are people that like cars and want a little extra. We definitely do exist, and I suspect many of us will be looking very intently at that Tesla.