A gallon of gas in California is averaging $3.63, 35-cents more than the regular joe American, and yesterday, a barrel of oil topped $111 (this time last year, it was $57). But as the San Francisco Chronicle explains, this isn't about supply and demand. Rather, it's the dollar and they break it down: Oil is traded in dollars. A weak dollar means that foreign investors can buy more oil, which helps drive up the price.......