I'm a huge Elon Musk/Tesla/SpaceX fan, and have often felt it would be the ultimate opportunity to work at either company (Tesla would be my first choice, as automotive interface tech is one of my passions). However, doing a quick bit of research earlier today, a search for "Tesla working environment" turned up more than a handful of reports by former and current employees that hint at an unpleasant company culture.…
I know nothing of Tesla/SpaceX, but be aware that how glamorous/hip a company/industry/etc is, often correlates negatively with how well they treat employees by objective measures, i.e. working hours, salary, etc. Just read some posts about the gaming industry. It's supply and demand, really.
http://www.glassdoor.com/Reviews/Tesla-Motors-Reviews-E43129...
Tough to say what the stories were behind all of these, but I can see how they might feel the need to push people way harder than normal, because during yesterday's presidential debate Romney lumped Tesla in with a list of losers that the government has given money to. Plenty of people are expecting them to fail even though many of us are excited at their prospects. In such an environment, I can see how Elon Musk might push some workers beyond what they can handle. However, I'd expect many of them are still happy to be part of the team even though the work is hard, because a Tesla employee really is part of something more world-changing than an Electronic Arts coder is.