A new and distinct Petunia cultivar named \u2018DCAS298\u2019 is disclosed, characterized by large flowers colored dark purple with an ivory rim. The differential level converter has a first MISFET pair for receiving the first signal, a second MISFET pair for enhancing the withstand voltage of the first MISFET pair, and a third MISFET pair with cross-coupled gates for latching the second signal from output. If the vehicle deviates from the guidance route, information needed for the vehicle to return to the guidance route is requested from the server.