I'm thinking of proposing a shorter route, perhaps 35 miles. I'm also proposing a quick one pint stop which will mean I put another tick in the GBG. I'd like to be home well inside Wednesday having had a beer, got some much needed miles in and not come a cropper on ice.
If there is any sign of ice I will either stay at home or head back by the nearest gritted road. Huggy is right, there is no point taking risks.
I will propose another route tomorrow morning.