Investors didn't get a lot of clarification during a Monday conference call about what a merger between Tesla Motors ( TSLA 4.68% ) and SolarCity ( SCTY.DL ) would look like, but Elon Musk made one thing clear: he's not hedging his bets on SolarCity, and will fully incorporate the company into Tesla. SolarCity won't be a subsidiary and won't be bankruptcy-protected in any way, so Tesla is, in a sense, hitching its wagon to SolarCity.