I actually planned for Death Valley, as I heard Palm Springs is like a vacation for rich people.. so mostly atas stuff..
Also I just realised Palm Springs is the wrong way - LA to Las Vegas is on I-15, but Palm Springs is on I-10, so it's about two hours out of your way. Death Valley it is. (PSP is nice though; don't write it off!)
I guess I would ask the hotel to see if I80 is closed, if not, I-5 would be good too, would go some national parks along the way.
Both drives are awful, and you're not going to see any real scenery either way.
First, pull up a googlemap so you can see what I'm talking about.
If you take the north route from Las Vegas to SF, you're taking US-95 north to Reno, then I-80 west to San Francisco. US-95 is desert all the way, so it's going to be deathly boring; I-80 over the Sierras isn't a bad drive, but it's going to be snowy and you'll have to carry chains and it's a hell of a lot longer than the south route.
If you take the south route, it's I-15 west to Barstow, then CA-58 to Bakersfield, then I-5 north to SF. You're doubling back on yourself for the first 150 miles, and the entire drive is boring as hell: I-5 through the Central Valley of California is famously one of the most boring interstates in the country (though I dunno, I've driven I-80 through Wyoming and it was right up there).
Either way, you've got a day-and-a-half to two days of solid driving, and Yosemite is 3-4 hours out of your way - each way.
Seriously, save yourself the hassle, and don't drive from LV to SF. If you really want to hit Yosemite, fly from LV to SF, and rent a car at SFO.
Would getting snow chain be absolutely necessary to visit? I think i will get 1 in the boot then and drive up.
Yes, if you're going to hit Yosemite Valley.
Here's the NPS's guide to "Yosemite in Winter". Give it a read.
(And you know you need more than one chain, right? It's one per drive wheel.)
I have drove in california 3 times and have never visited a national park to stay in their cabins before.
Be warned, you're going to have trouble getting cabins in the park - those things sell out a year in advance sometimes. But... it looks like there's midweek availability in Yosemite for the first week of December (even at the fancy Ahwahnee Lodge), so you might be in luck. And the Furnace Creek Inn and Furnace Creek Ranch in Death Valley both have plenty of availability around that time.
Oh downloadable map! great, u mean without data plan (i dont intend to switch on international roaming), the phone can still knows my current location?
Yep, the GPS works even if the mobile data is switched off. I've done this before and it works great.
De nada.
Update: There is one reason to take US-95, and that is to drive phenomenally fast on long, flat, straight roads. Problem is, that doesn't work - I've driven US-95 and it's infested with highway cops. There really is no reason to drive that stretch, like, ever.