From Lake Tahoe - seeing some of Yosemite then to Death Valley and Las vegas. 2days?

[Southwest Dave]

Yes, Yosemite and Tahoe at this time of year isn't really possible with your timeline. You could head to Yosemite valley and then head south to Bakersfield and through DV, or head to Lake Tahoe and through Death valley. You could spend the 28th at Lake Tahoe and then start to head towards Death valley, perhaps overnight around Lee Vining or Mammoth lakes, sightsee on the way to Death valley and perhaps overnight at Furnace creek which then gets you to Vegas quite easily the next morning, or afternoon if you fancy seeing more sights.