[Pan_Yan]

Do their tires not have treads? Here we have school busses delivering students into the Cascade Mountain foothills through ice, snow, mud, running water and whatever else a typical winter might bring.

Perfect storm. It was about 30 degrees when it started snowing. That meant the pavement was warm enough to melt the snow ... for a while. Once the snow got heavy everything turned into an ice rink. Then all of a sudden at about 2 pm a million people in the same city decide they need to relocate RIGHT NOW. No snow tires. Little experience with ice. Once everyone gridlocked the city the road crews and sand trucks were stuck as well.

[ealgeone]

Makes for an interesting SHTF consideration.