This post about the carbon footprint of wine contains an interesting map at the bottom. It’s a map of the US with a line splitting the country in two. West of the line, it is more carbon efficient to drink Napa wine while to the east of the line it is more carbon efficient to drink French Bordeaux. You can almost see the coastline of the eastern and Gulf states struggling westward against the trucking route from California. The Vinicultural Divide?