I had the opportunity (ie, not planned) to drive the 5 mile Wayfarer this weekend just gone in the dark.
It took half-an-hour to make the summit, just in time to watch the sunset.
Whilst we were there we were joined by the Chairman of CRAG (Countryside and Recreational Access Group) and his family, where we shared half-an-hour chatting about laning, GLASS, CRAG, Difflock, 4x4 motorsport etc.
By the time we had supped up the coffee (did'nt do bacon butties this time), it was getting dark, so it was just about time to leave.
Here's a 5½ minute video of the half-hour decent.
Video Clip
I really must sort out the spot light beam alignment (all six of 'em)
Lawrence