The upcoming Model 3 is key to Tesla's mass-market hopes. But Tesla said it may need to raise more money to get the compact electric sedan to market. Image source: Tesla Motors.Tesla Motors (NASDAQ: TSLA) plans to raise additional funds before the end of the year. The added cash will help fund the development of its upcoming Model 3 sedan and the ongoing build-out of its battery Gigafactory, the company said in a regulatory filing on Wednesday.Continue reading