I've noticed this phenomenon. About half of SUV driver exhibit NO caution when driving in absolutely horrendous conditions.
It was with some satisfaction that I saw a driver and his SUV on the center median of the Adirondack Northway who had minutes before blasted past me at 70 while I and everyone else crept along at 35 during snowstorm that was rapidly changing over to ice.
During the winters when we were stationed up in North Dakota we would drive the 15 miles to town after a snow storm and a majority of the vehicles stuck in the median and on the side were four wheel drives.
It seems that too many of the drivers think that they are under differing laws of physics when in a four wheel drive.