My girlfriend and I are visiting Europe this fall, mid September to mid October. We're starting in Denmark, renting a car and staying with friends and relatives throughout the country while there (can't beat free accommodations!). The plan is to then head south and drive through Germany, maybe hitting Switzerland, Austria etc for approx a week and a half give or take. The only places that we want to visit for sure so far in Germany are the Nurburgring, Munich and Berchtesgaden (visited the last 2 in 2006). With this in mind and no concrete itinerary, what can we expect in terms of finding accommodations "on the fly" when we arrive wherever it is we end up on a particular day? Will having a car make it harder to find accommodations that have provisions for parking?
We'll have GPS and our trusty Rick Steve's book as references.