We had steady light snow on our way to Maine this past Friday, starting near the MA-NH border and continuing the rest of the way. Visibility was fine driving. The roads didn’t feel particularly slippery to me, but as we were leaving the Hannaford’s supermarket in Windham we saw a car do a big skid in the parking lot. We had been going 20 mph behind some very cautious drivers most of the way from the turnpike exit up to Windham (we were even beginning to wonder whether we would get to the supermarket before it closed). After seeing that skid, I was more sympathetic to the slow drivers. The whole ride took us more like 4 1/2 hours than the usual 3.