GM's decision to shut down its Cruise robotaxi program continues to ripple through the market, extending to the self-driving car company's minority

Key Takeaways Microsoft said it expects to take an impairment charge of roughly $800 million after General Motors halted the development of Cruise autonomous vehicles.The tech giant and others like Honda and Walmart invested in the "robotaxi" startup over the last decade.

Microsoft announced its minority investment in January 2021, joining Honda and other institutional investors. All told, the players invested $2 billion at the time, bringing the post-money valuation of Cruise to $30 billion. What a difference a few years makes.