I hate to tell you this, but if it weren't for the people NOT on the bus (not necessarily against the bus either), there would be no Tesla today. Most people buy Tesla's cars because they are awesome. Period.
If people were truly buying a Tesla to protect the environment, Chevy Volts, Toyota Priuses (is that correct???), and Nissan Leafs would have FAR outsold vehicles like the F150, Explorer, Suburban, Camry, Accord, etc. But, by a LONG SHOT, they did not. Trust me on this - people that have $75k to spend on a car are looking for a great car first - if that happens to be a car that is good for the environment, they will feel better about themselves, but it's not WHY they bought the car. And that's the same of a $35k to $50k car. When you get down into the $15k price level, you'll find some people buying for the environment alone.
Obviously there are exceptions to this, but you can bet your bottom dollar that it's by far the rule, and not the exception. There's a reason why AT&T said the drudge report was the #1 most visited website in a Tesla car a couple of years ago. A lot of conservatives bought a Tesla - again, because it was AWESOME!!