"Texas is sometimes called the "land of pickup trucks," even charging lower taxes on pickup truck registration (agricultural use only) than on other types of vehicle registration.` Indeed, Texans have 14% of the pickups in the U.S., and automakers sometimes offer special editions of their pickup trucks, with names like "TEXAS EDITION" and "LONE STAR EDITION," more commonly known as the "Big Horn" in other states. Many parts of the Deep South states and rural Mountain West states also have significant pickup truck cultures, high registration of pickup trucks, as well as similar Texas tax cuts on pickups." - http://en.wikipedia.org/wiki/Pickup_truck
According to wikipedia, 14% of pickup trucks in the US are owned by Texans. Do you think the US will move to fuel efficient vehicles like Europeans?