It was the sergeant of the police in Gilbert and Sullivan's Pirates of Penzance who sang the sad complaint 'a policeman's lot is not an happy one.' Watching Detective Sergeant Ed Ritter and his girlfriend Betsy Grant, as they snake along in weekend traffic after a day at the beach, it would be hard to agree - this is one happy policeman! He's relaxed and obviously very much in love - and so is Betsy.