Electric bus maker with a factory that Joe Biden toured just two years ago has filed for Chapter 11 bankruptcy Share Tweet The company, Proterra, is a big supplier of buses to transit systems across the nation. Read More Source: fortune.com Click to comment Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.