A spare day in Dehradun last year was the perfect chance to visit Mussoorie, one of the places I'd always wanted to go to. Though this was an extremely rushed visit (we had just about 6 hours to spend in this pretty place that deserved many more days), tried to make most of the time.
The drive from Dehradun uphill was a very pleasant one, through the valley. Our cabbie was an old man, with an experience of driving through the length and breadth of the country. Listening to his various tales was wonderful, as was driving up those beautiful winding roads typical of any hill station.