A big boss of a car company named Mary Barra talked about how another car company called Tesla, led by Elon Musk, is very good at making new things quickly. But her company, General Motors, has to be more careful and think about what they do based on their own rules and beliefs. She also said that other car companies from China might come to the U.S. and sell cheaper cars, so GM needs to work hard too. Read from source...

1. The title is misleading and sensationalist, implying that there is a direct competition or rivalry between Musk and GM, while in reality they are both players in the EV market with different strategies and goals.
2. The article focuses on personal opinions of Barra and her views on Musk's activism, rather than presenting objective facts and data about the performance and prospects of GM and Tesla as companies.
3. The article fails to acknowledge that Tesla has faced its own challenges and controversies, such as production delays, recalls, investigations, lawsuits, etc., which have affected its reputation and stock price in the past.

The article discusses GM's CEO Mary Barra's perspective on competing with Tesla and other EV manufacturers. She acknowledges Elon Musk as an innovator but emphasizes the need for GM to think through its stances based on company values. The main risks for investors are related to the global EV market competition, the availability of charging infrastructure, and the execution of business strategies by both companies.

Some possible investment recommendations based on this article are:

- Buy GM shares if you believe that the company will successfully compete with Tesla and other EV manufacturers in terms of innovation, quality, and value, while adhering to its core values and avoiding unnecessary controversies.
- Sell GM shares if you are concerned about the challenges faced by the global EV market, such as the entry of Chinese competitors, the lack of charging infrastructure, and the changing consumer preferences and regulations.