Electrified vehicles are coupled together by a towing device for in-flight energy transfer. A remote-controlled parking system collects images from vehicle-mounted cameras to produce a 360° overhead live streaming image that is displayed on a smartphone linked to a vehicle controller. A user interface (UI) on the smartphone accepts a first touch from the user on the streaming image showing the vehicles at a starting position in order to specify a maneuver endpoint. The controller calculates a sequence of steering actions to create a path to the endpoint. The UI displays the calculate path as an overlay on the live image. The UI generates an activation signal in response to a second touch input on the touchscreen, and forwards the activation signal to the vehicle controller during the second touch input to move the vehicles according to the actuator commands only while the user maintains the second touch input.