Electric-car maker Tesla Motors (NASDAQ: TSLA) was the first company to market with a fully electric vehicle boasting over 200 miles of range. And it turned out to be a sweet spot. With its Model S now outselling all comparably priced sedans in Tesla’s key markets and the Model 3 garnering 373,000 deposit-backed reservations just 15 days after its unveiling earlier this year, the 200-mile barrier has clearly resonated with consumers.