Weather Underground Road Trip Planner

Disclaimer: I provide a local weather station for Wundermap in support of bike commuters, riders, and local weather forecasting.

I ran across this application, Road Trip Planner, on Weather Underground,  for providing weather forecasts to help in planning a road trip.  I like the idea, but entering my own cities seems so time consuming, I wish I could just click on the map, or upload a quick CSV file.