My wife and I have booked our first Holiday to the US and we fly in to San Fransisco (from Amsterdam) to rent motorbikes for the first week and spend the following three weeks in a RV. Pick-up and drop off of the bikes will all be in SF so we´re thinking of a roundtrip not too far out of SF , any suggestions for a nice one week roundtrip? We like Nature and the countryside but have to find overnight accomodation for we carry no campinggear on the bikes . Also I was wondering if the European road habits differ much from the American in general...like filtering through traffic, locking the bikes, challenging speedlimits, parking the bike on the pavement in buit-up areas and all those little customs that might not be appreceated once abroad. My best guess is to do as the locals do and to use common sense when not certain but some tips and advice are welcome. My last question is about what kind of weather we can expect in the month of september on the west coast. Greetings, Rob.