My wife and I are flying into FRA and renting a car (is unlimited mileage an option? Hertz doesn't seem to offer it) Aug 22nd and need to fly to Southampton on Aug 25th. My only requirement is to visit Goppingen (where I was born, have not been back in more than 30 years) other than that I am looking for suggestions on where else to go. We don't need to fly to SOU from FRA and we could always fly to STR instead of FRA on the 22nd.