Thought I would let cabrio owners know that I bought Autoglym roof cleaner (http://www.amazon.co.uk/Autoglym-Cabriolet-Fabric-Hood-Cleaning/dp/B006R4HEBG) for the convertible and I am really impressed. When I bought the car the roof was a hint of green and a big wet sponge...but now it looks blue again and the water just sits on the top. OK, I've given the it two applications of cleaner and protector, but it's done the job!