It's the hottest car on the market right now. But what is it about the PT Cruiser that's striking such a resonant chord with American motorists? Maybe it's the way people see so many things in DaimlerChrysler's stylishly quirky subcompact. So it's no surprise to find so many Cruisers collected at this year's annual gathering of the Specialty and Equipment Marketers Association in Las Vegas. The annual convention of aftermarket partsmakers, and automotive customizers featured some unusual and off-the-wall PTeasers, ranging from the nitro-charged, 325-horsepower PT Bruizer to the rolling rock-n-roll machine, the Vavoom! Setzer Cruiser, custom-designed for Stray Cats guitarist Brian Setzer.