If you’re looking to change your car in Uber, the best way to do it is to use the Uber app. Once you’ve set up your account and logged in, you can use the “change car” option on the left-hand side of the main screen. Once you’ve chosen your new car, you’ll be able to see a list of available drivers and their availability. You can also choose to have your car brought to you or picked up from a nearby location.