The Chevy HHR was introduced in 2006. Some saw it as an "answer" to Chrysler's successful retro-styled PT Cruiser. Whether this compact crossover was indeed a response to the Chrysler PT matters not a whit, as the 2008 Chevrolet HHR stands on its own just fine. For the record, the HHR shares its basic architecture with the mostly unloved Chevy Cobalt (available in coupe and sedan body styles). Thankfully, those roots don't seem to be holding the HHR back, as this tall-roofed crossover is a pretty pleasant piece of work.