In order start an excursion, D'n'G will first launch Google Navigation, which will navigate you from your home base to a designated "D'n'G meeting point", which is mostly a gas station somewhere near you.

In the "meeting point", D'n'G registers your position, and your guided excursion will start. Also, you can check fuel, and prepare for a long and entertaining day.

From the meeting point, D'n'G will navigate and entertain you through the whole excursion. While on tour, D'n'G doesn't need any input from you.