I love the quote from Elon. "Copy us or join us"
It forces everyone else to ask the question, how far behind Tesla are the other auto companies? 3 years? 5 years?
None of them have gone 100% for electric like Tesla Motors has. They are all still bound to the model of oil changes, gasoline, etc. They have a ton of capital invested in all of those engine designs and distribution networks. As a result, none of them would have ever considered spending $100 million on a Supercharger network in North America and Europe.
The other problem is that their franchise dealer networks are not thrilled with EVs. There is far less revenue for maintenance and service from an EV, so there is far less incentive for a dealer network to sell an EV. It will be interesting to see if a really well done EV from BMW, Audi or Mercedes fails due to dealer neglect or indifference. Of course, we have yet to see a really superior EV from anyone else, so we don't have the evidence yet.
Tesla seems to me to be about 5 years ahead of anyone else at the moment. Nobody else is even seriously in the early stages of designing the things that Tesla has on the market right now. The Model S and 120 kw Supercharger network are game changing technologies that will excite people. People HATE high gas prices. Tesla is the first viable alternative EVER presented.
You want a killer app? I think it will be the Tesla Gen III at $30,000 to $35,000 with a 200 mile range and access to the Supercharger network. There is a real market for that, especially with $4+ gasoline.
Fracking produces natural gas, not oil. Gas prices are still going higher.