Before Chrysler had Street and Racing Technology, it had Performance Vehicle Operations. What the two entities have in common, before SRT became its own brand, of course, is that each was created to take Chrysler and Dodge (and Plymouth, before it was unceremoniously killed off) vehicles to the next level of style and performance.
Peter Valdes-Dapena has penned a nice piece examining Chrysler's options for the next PT Cruiser. It's an interesting question, as Valde-Dapena notes, because no retro vehicle has ever been substantially redesigned. Like the recent refreshening of the Volkswagen New Beetle, Chrysler's redo of the PT Cruiser for 2006 amounted to minor visual tinkering. Reportedly, however, Chrysler is looking to have an answer ready for an end of the decade launch.