A few people know this already, but some of you might be interested to know that I'll be having a go at the West Highland Way double this week.
I'm starting on Friday morning from Glasgow and I'll be carrying a SPOT tracker, so you will be able to follow my progress online. I'll be riding a Surly Pugsley - much as I'd love to ride my Singular, I think the fat bike will be best tool for the job this time. I'll be carrying all kit for the entire journey so even though my girlfriend will be following on the road, she's there for emergencies and photos. I will be taking bivvy gear (including a stove), but not intending to use it unless I have to.
I don't underestimate the difficulty of being up there on my own in the winter. In case you think this idea is entirely half-baked, it's worth knowing that I have ridden the Tour Divide and Iditarod Invitational to McGrath.
You can follow last-minute preparations, updates during the ride, and the aftermath on the internet:

