And then, the Cars returned to making pop music with new-wave and art-rock influences, rather than art-rock with pop influences. It seems a wise choice, since their greatest triumph was in their debut’s ability to walk the line between pop sensibility and avant-garde experimentation like it was a tightrope. And while Shake It Up might not match the finesse and memorability of the first classic, it easily leapfrogs over Panorama with radio-ready singles as well as paranoid, freakout tracks.