We are arriving on July 1st traveling from sf airport to monterey. We have seen alot of good ideas on how to go this route. we are wanting to leave early like 6 or 7 on the morning of the 3rd to travel from monterey back. We had thought about traveling inland a little bit to bypass SF and go to napa valley. I had seen mention about a redwood forrest this way instead of trying muir woods on our way back into SF later in the day. we have to have the rental car back into the SF airport by 6 that same day. Is this feasible? Or are there sugesstions? We would like to stop somewhere for breakfast and maybe a late lunch in napa valley.we are very flexible about the trip back. Also, is returning the car back to the airport a good idea or any other sugestions? I really don't know about drving into SF on that Monday before the 4th to return the car during peak driving times.