Make sure you have winter tires. Last year we were up there at Mt Baker with two other families. It was snowing hard and the road was slippery. My buddy drives a Subaru AWD and had all season tires. On the way down, he slid off the road and almost rolled down into the trees. My car and the other family’s car both had winter tires and we were fine. AWD is not the solution to winter driving. Winter tires are more important! There were a lot of other trucks and SUVs that slid off the road that day. I’m sure most of them had AWD or 4x4.