I was a bit unsettled by all the talk about how under-capitalized some of them think Tesla is. It reminds me of De Lorean Motor Company. You know, DMC had some problems with their business, problems with their product and their manufacturing. . . But they weren't intractable problems. They were problems that could be solved and were being solved, but then DMC ran out of money. That was the end of it.
Tesla do have a lot of factors working in their favor that DMC did not have. They have a product that is much more distinctive and will face virtually no direct competition, for a while at least. They have the whole "green" movement and oil price shocks going their way.
Most of all, they have technology that other companies will want. At the end of the day, if the numbers in the business plan aren't adding up, and the vast sums of capital needed for White Star don't materialize, they can shop around for a corporate buyer and probably find one.
I don't see any problem with the Roadster as a business proposition. White Star, though. . . That's a tough one, simply because of the amount of funding required to get it off the ground. I'm not that brave, I'd probably balk at trying to go that route. I'd be more inclined to structure a business like Lotus, where they have a small "boutique" car-marking division, and they also have an engineering division that contracts out to larger car makers. (Tesla Energy Group was a tentative step in that direction, I thought.)