A system includes a mobile computer programmed to receive, from a vehicle computer, an instruction to proceed to a location and vehicle operation data from an in-vehicle communications network. The mobile computer is programmed to determine that a vehicle is ready to proceed to the location based on the operation data. The mobile computer is programmed to receive user input approving transitioning from a boarding state to a driving state. The mobile computer is programmed to then instruct the vehicle computer to actuate vehicle components to proceed to the location.