Rule changes announced by the Trump administration this week could allow automakers to report fewer crashes involving self-driving cars, with Tesla potentially emerging as the main beneficiary. The Transportation Department announced Thursday that it will no longer require automakers to report certain kinds of non-fatal crashes —

KEY TAKEAWAYS Tesla shares jumped Friday, extending their recent rally after CEO Elon Musk said he would spend more of his time focusing on Tesla, as the Trump administration moved to loosen rules around self-driving cars.

Kristin Hull, head of Nia Impact Capital, says she is concerned about Tesla’s sales drop in Europe and California. The activist investor explains why she isn’t bullish on Tesla despite Elon Musk's plans to refocus on the company.

Tesla's new car sales in Europe dropped 28.2% in March from a year earlier, even as overall battery electric vehicle sales rose 23.6% in the month, according to data from the European Automobile Manufacturers Association (ACEA).

Tesla (TSLA) continued to face challenges in the European Union in March as new car registrations declined 36% to 18,224 vehicles. Importantly,