Tesla Inc's (NASDAQ:TSLA) plan to bring autonomous vehicles throughout the country was a key storyline in the fourth-quarter earnings and earnings call. New trademarks filed by the company could indicate the names of some vehicles.

Tesla Files New Vehicle Trademarks

As Tesla expands its autonomous vehicle efforts, the company may have to pivot to a new name after being turned down on a trademark for "Robotaxi."

During the company's fourth-quarter earnings call, Tesla CEO Elon Musk even mentioned that Tesla may not be allowed to use certain terms in certain states.

"Because that implies that the CyberCab, which is a dedicated two-seater dedicated robo taxi, is a little confusing with the terms robo taxi and CyberCab. Sorry about the confusion. In fact, in some states, we're not allowed to use the word cab or taxi, so it's going to get even more strange. It's going to be like ...