I've been driving for 50 years in all terrains and conditions. But my 1998 LS400 baffles and alarms me. Even with the snow button pressed and the gentlest right foot, it will refuse to move off in the presence of snow and ice. Therefore when snow and ice are forecast I despair and leave it at home and drive off in my old Citroen BX. This is inconvenient, but if I encountered snow or ice on my return journey, I'd have to be prepared to stay with the car until Spring!