Sometimes to get to know a city, you gotta look at its police blotter. While Oakland is dealing with drive-bys and other pleasures, poor Walnut Creek must contend with the terror of drunken Ferrari drivers. Police arrested Thomas Smyth Sunday on suspicion of driving under the influence of alchohol after he careened his Ferrari into another car and put traffic to a halt along Treat Boulevard. Well, first they had to cut the roof off of Smyth’s Ferrari. Then they arrested him.