An undercarriage system couples to other vehicles, such as wheelchairs and provides mobile application-driven operation. In an exemplary application, the system may be configured to receive a push driven wheelchair and temporarily retrofit the wheelchair for motorized operation. The system includes a console for a mobile computing device that operates a software application and user interface that steers the undercarriage system for navigating through an area such as an airport or other complex. In some embodiments, the software application may provide automated navigation of the undercarriage system so that, for example, the user only needs to enter in a destination (for example, a terminal number) and the application automatically drives the system including the wheelchair to the destination. Sensors and/or cameras may detect objects or markers to guide the steering.