Sidecar Social combines craft cocktails, scratch-kitchen plates, an enormous patio, live music, private karaoke, classic gaming activities like pop-a-shot, bocce ball, and shuffleboard, and live sports on 18-foot screens. It’s the newest concept from a fast-growing company that owns BoomerJack's Grill & Bar, a chain of 13 sports bar restaurants, and live-music venue Bedford Ice House.