My wife and I are going to San Francisco from Scotalnd at the end of August this year. After spending a few days in San Francisco we are setting out on a trip by car to Las Vegas where we will spend a few days as well and see the Grand Canyon . However the "middle part" is time limited and we really want to make as much of it as possible as we are to be joined by our son and his wife who work in Houston. We will leave San Francisco on Sunday 30th August and finish in Las Vegas on the evening of Friday 4th September. It is intended to visit the Grand Canyon on Saturday before our son has to return to work. We want to see as much as possible of the country between while stilll keeping it leisurely. We would like to see Lake Tahoe, Yosemite, Mammoth Lake and stay in Death Valley for a night but otherwise we need guidance on how best to do this and see as much of the rest of the area as possible. We have never been before and after reading books on the area our heads are just spinning so what seemed relatively straight forward a month ago has spun out of control and we desperately need to tailor it to our time schedule to get the best out of it. We would appreciate any guidance.