Not that I'm an authority on the subject of public transportation. I'm more of an expert, having lived all my life in Southern California (with a bit of time in rural Colorado), on the lack of it.
RANT ALERT!!!
I've heard all the reasons. There are myriad historical, sociological, anthropological, geographical and political (and whatever other "-al") explanations as to why there is such a dearth of good public transport options in most areas of Caleeforneeya (and the rest of west). Funding (the "financi-al") is only the manifestion of priorities, and isn't, in an of itself, a reason.
END ALERT
Since we're on the subject of transportation, the Nevada County airport is about two miles from us, as the Cessna flies, though it's about 15 minutes to drive. And that little airport became a beehive of activity on Saturday for the annual air show. Oddly, having lived near Miramar (of Top Gun fame) for so many years, where the air shows are huge and full of Blue Angels among other spectacles, we've never attended such an event.
I think we were both surprised about how much fun it was to look at all the old war planes (well, sobering, too), the colorful vintage aircraft, the sleek experimental airplanes, the CalFire scout planes and water-bombers, many of them doing fly-bys in turn, and more! We even loved the amazing eagle-sized radio-controlled hobby planes (like honeybees among the condors). I've always thought it would be quite a thrill to know how to fly a small plane, but it's never been, say, very practical to think about it too much. There were helicopters, ultra-lights (now THERE'S some fun!!) and micro vehicles (three-wheeled), made by Messerschmidt and BMW. And, this being Nevada County, at every event one can always plan to see lovely vintage cars and/or belly dancers. The dancers were conspicuously absent, but there were some beautiful old cars. And, now that we're getting a bit acquainted, at most events we encounter a few folks we know, which is fun.
Happy traveling!