TL;DR: Is it possible to prudently and safely cross the Sierra Nevadas at some point so that a 172N can travel from OAK to VGT non-stop? Background: While I wait a little bit to make sure this "I want to fly" thing is for real before plunking down the $$'s, I've been playing around to figure out all the cool places I could go If I had a ppl. It's been fairly interesting, for example, I found out that while Catalina Island is within range, it doesn't have fuel for sale, so I couldn't do it non-stop or I'd be stranded. The other day I suddenly realized that there are a bunch of mountains between the bay area and las vegas. Playing around with the flight planner on aopa seemed to show every route blocked by at least 8k mountains and even that route seems to be blocked by reserved airspace (though, I could be reading the chart wrong ...) So is it possible to go over the sierra nevadas with only 180hp plane?