Just a reminder to keep a stack of warm stuff including a flask of hot
coffee in the car if you are going to use it.

Suggested:

Blanket and sleeping bag, wool hat and mittens as well as spare socks
and change of shoes also a packet of biscuits might be reassuring.

Have you got a shovel? Charged and topped up mobile phone? Torch? And
do your friends and whoever know what you are doing?

And last but not least are you going to play follow my leader when a
plonker shows you that you can in fact drive faster and closer than you
had at first thought safe?