A sure Sign Of The Apocalypse, self-serve beer machines are now operational at Target Field in Minnesota. First, step right up to the "concession cashier" and show your proper ID. Next, buy a "vending card" in $10 or $20 denominations. Then, take a 20-ounce cup from the machine, pull down the tap handle and dispense a little or a lot. However, to keep the lines moving, you have just 20 seconds to complete your transaction. There's a 48-ounce limit every 15 minutes and taps shut off after the seventh inning. Signs and wonders.