Mercedes CLK 55 AMG promo video

The cheesy promo shows a CLK 55 beating a private plane from SoCal to NorCal.  During the housing bubble in California, these coupes were everywhere.  I'm sure it's a very competent car, but I just didn't see its appeal.  It seems like Merc just got lazy and decided to stuff the "55" AMG engine in everything.  Was there ever an A55 or B55 AMG?