detailed like that before. >> reporter: tweeted that the executive comments were terrible and do not represent the company. >> can these pr problems bring down the company? >> they could if they continued to get out of control and there are more of them and the company doesn't address them. so this might turn into a dart vadar if they are not careful enough. >> reporter: uber hired a master mind who helped with president obama's election in 2008. part of job, to get uber in the city where the powerful taxi companies have been powerful in keeping them out. the ceo writes, acknowledging mistakes and learning from them is the first step. >> we just want to push a button on our phone and get a ride and that's an aspiration and functionality that millions in cities across the country and