The Tesla Motors Inc (NASDAQ:TSLA) Model S has the highest customer satisfaction rating of any car on the market and is still limited by supply, but according to Tesla Model S ex-chief engineer Robert Feldmaier that won’t be the main force behind future demand. “He sees EV demand as largely driven by regulations not consumers, and believes that based on current CAFE standards ~30% of vehicles will need some form of electrification long-term (~3% now),” writes UBS analyst Joe Dewhurst, who spoke with Feldmaier recently and points out that EU corporate average fuel efficiency (CAFÉ) standards will be revisited in…