Uber: Open Redirection on Uber.com

There seems to be an open redirection on Uber.com When a user uses https://www.uber.com//google.com/cities it will lead to a Page Not Found on the Uber website but if the google.com is changed to an IP address such as https://www.uber.com//216.58.217.206/param it will lead to either a 404 or an S...