I had the opposite experience today. Out on River, a guy was lost or something and after he passed me, he started going really slowly, especially down the hills, but then he'd go for a bit, then slow down again. There was another car following him who put its hazard lights on. I was confused and stayed way back to avoid being sprayed from the wet road. Eventually, they "pulled over" (not really b/c of the snow) and let me pass. The guy in the front car yelled "sorry!" as I went by. Weird, but nice, I guess.