“Sound Opinions” host Greg Kot praised them as one of his favorite discoveries of 2018. Mike Joyce of the Smiths spun one of their songs on his U.K. radio show. The already-exponential buzz on Dallas quartet Motorcade surges on. The band plays Saturday at the Kessler, part of the KXT Local Show. Before that, they stopped by the KXT studio to play a few tracks and talk with Local Show host Amy Miller.