R. BEGLEY 
2005 Toyota Camry Solara Coupe SE V6 2dr Coupe (3.3L 6cyl 5A)
MY PERSONAL OPINION - FOR WHAT ITS WORTH
 REAR WINDOW IS SMALL IN CONVERTABLES.  
THE HEAD REST ON REAR SEATS BLOCKS 
VISABILITY EVEN MORE.  THEY COULD BE 
RETRACTABLE WHEN THERE ARE NO 
PASSENGERS.  THAT WAY, YOU WOULD HAVE 
THE ENTIRE REAR WINDOW FOR VISABILITY.