Convertible? This is our (australian) Holden Monaro Convertible Holden in Australia had designed the Monaro Covertible sometime in 2001. however this was not released to the public until 2004 (may). here are some of the pictures of the Holden Monaro Convertible a.k.a "Marilyn" - Marilyn the Monaro!!! Unfortunately due to high costs the convertible wont be made. however dont rule it out ... talks will be conducted in the future to see if the project could actually begin. i dont think this will happen until late 2005. The convertible got quite high safety ratings than expected, higher than that of Mercedes SLK, Honda S2000, MG-TF, and Mazda MX-5.