Regarding effective marketing, I do feel that the majority of Tesla's target market is different from the typical car market. I think many of us are engineers/scientists/nerds.
I feel that when selling to the general public, aggressive marketing can be effective, where you blast out a bunch of stuff that's technically true but perhaps misleading, and then keep on pushing with a "so you can see you'd be a fool to choose anything else, right?" and a "all you need to do is sign here". "If you sign right now, we'll give you 10% off!"
However, I feel that nerds are usually turned off by aggressive marketing. We like to be given straightforward data and come to our own conclusions. It's fine to provide a calculator tool where we can plug in different numbers to compare the total cost of ownership, but keep the calculator fair (e.g., business tax deduction), and not start by claiming a $500 lease. I got solar panels on my roof a couple years ago from SolarCity, and mentioned the idea to a couple colleagues (both engineers). They talked to SolarCity and both immediately rejected them because they seemed too "used car salesman"ish. One went with Verengo and the other gave up on Solar. It's a shame that she gave up on Solar because it would save her money and help save the environment. If the salesman had only allowed her time to come to that conclusion, she would have. Instead, the salesman kept trying to push her to sign, which made her feel like something was wrong about the deal, and she walked away. Give nerds in the Bay Area (where the marginal electric rate is $0.35/kWh for many of us) the facts, and solar will sell itself. All you can accomplish by bending the truth is to make people feel that you're not a trustworthy company.
I feel the same way about Model S. Let the car do the talking and get out of its way. Give us the facts ($7500 tax rebate, etc), but don't start out with a quoted monthly payment that's lowered by $59/month because there's a guaranteed resale value. Don't imply that you can charge at 62 miles per hour at any outlet in the country. It comes across as slimy, and sullies your reputation.
I don't think this is new for Tesla, either. Back during the Broder kerfuffle, why did Tesla have to assume Broder's intent? Why not just give us the facts (he said he was driving 45 mph, but was actually driving 55 mph), and let us determine if he was acting in good faith or not? When you assume that driving around a parking lot was only done to run out of juice and he provides a somewhat reasonable reply (he was looking for the charging station), it weakens your whole case. The case is strong when you don't try to stretch nothings into somethings, and when you're caught stretching, all of the clear cut arguments are weakened.
Anyway, Tesla doesn't have much of a reputation right now. Why not establish an honest and straightforward reputation? I think this would help their sales to nerds, and I think nerds make up a disproportionate share of their target market.