On a Friday night, Happy Hour at Barney’s Beanery in Old Town Pasadena is coming to an end. The scene is lively. There’s music, football on the big screens, hot wings, cold beer and complimentary breathalyzer tests being performed by the Pasadena Police Department. “Do you know your limit?” Police Officer Alonzo Gonzalez asks with a smile as he zig zags his way through the bar asking patrons if they’d like to find out if they could get behind the wheel – given what they’ve had to drink. Many were curious, stating they had only had a couple of beers,…