GM Chev HHR

The HHR is neat and the price is right, I could probably get it with all the options for 20k. Does anyone know if its built on another GM platform? for example, I've heard the Malibu is built on a Saab line.
 
Another example of how GM has trouble designing something original. It looks like a cross between a PT cruiser and a Durango.

This reminds me of that atrocity of a pickup trusk they put out.

They build good quality vehicles but IMHO it is uglier than my cat's litterbox.