Here in NYC, the snow had to be around 3 ft. deep before they called a snow day and only cuz it would take the us so long to walk to school and the teachers even longer cuz they took the subways and buses. We didn't have school buses and no one drove us.
As for conserving gas, didn't we go through this in the 1970's? That's when Japanese cars became so popular for their fuel efficiency and people took mass transit and car pooled. I wonder if now's a good time to buy Honda and Toyota stock.