DSLR
It's true that they close the roads too quickly in Calif -- too many flatlanders, like me, who don't know what they can and can't handle. Folks who are ignorant and unprepared go into the mountains with ordinary passenger cars, get stuck, and die, every year. So the highway maintenance people are very cautious.
Anyway, I have been using a DSLR for the last several years. My latest is a Pentax K-30. It permits me to control a lot of the variables -- white balance and so forth. I also use a polarizing filter for most of my daytime shots -- not in low light or in darkness. Then I process the shots in Picasa, and I am starting to use Lightroom for the trickiest lighting.
All of this takes some getting used to, and the camera is heavy and bulky, compared to a point and shoot. But the photos are my attempt to literally capture a slice of our camping trips. Someday, we will not be able to do these adventurous trips anymore, so the photos will help fill the gap.