Organzing a Road Trip

I've made it an effort the last 6 or so months to try and get away for at least a day. I've been heading north to G-ville and surrounding areas. The trouble with road trips is planning the stops along the way and also figuring out a tour schedule. Since this trip is to delivery signed books to people, I'm finding it hard to co-ordinate my stops. Two of them keep emailing me with changes in their plans. Its a week away and I imagine it will only get worse. If I could stop in for a hour or so at a few of the stops, it would make it easier. But the trouble with that is finding an excuse to leave so soon.