Thanks, guys... I looked at the UHaul car trailers and their website didn't give the option to rent anything but a moving truck to go with the trailer, although if I drove back at least as far as Vegas or St. George to pick up the truck it would be half the price of getting it in Oceanside (I'm planning on going down to SoCal after I pick the car up in a couple weeks.) IDK if anybody I know down there is going to have a pickup truck they can do without for a week, although my cousin's got a 4-Runner that has a tow hitch so maybe.
The snow frequently does melt off quickly, especially earlier in the season, although I'm going over a few 6000' passes on the way back and it might stick more up there. The weather can be weird here - sometimes we'll have a warm snap and it's 50F in Jan. so maybe if I could find a short-term storage in Vegas or St. George that would be the easiest option. I do have quite a bit of Southwest credit so at least I could fly down and drive it on the weekends
I've driven in snow storms before but it's always been in front wheel drive cars. If it unexpectedly started dumping I'd plan on just pulling over and waiting it out, but it's more the salt I'm worried about sticking to things. I was probably going to have to drive it on the road during the winter for a few miles anyway b/c I'm trying to buy a house but a couple hundred miles is a bit different than across town.