General Motors is winding down its Cruise robotaxi division, according to a new report from Bloomberg. GM's exit from the market leaves Google's Waymo and Tesla as the two main names in autonomous driving. The division "proved costly and full of reputational pitfalls" for General Motors, the report said. GM and Cruise will merge technical teams to focus on autonomous tech for future GM vehicles, halting robotaxi development due to high costs and stiff competition, the company announced Tuesday. This marks a significant shift after Cruise…