By Penny Sadler You might not expect to find much art and culture in a small town (pop: 13,652), designated by the Texas legislature as the Barbeque Capital of Texas. But just three and a half hours south of Dallas, Lockhart has blossomed, not least because of the exceptional creative talent fleeing the onslaught of new residents (and price hikes) in nearby Austin. In the process, Lockhart has become a haven for those seeking a getaway that’s luxurious but not stuffy; artsy without pretentiousness. Bonus: By exiting the Interstate 35 corridor, you will also avoid some of the worst traffic in t…