Megane caught fire! Has this happened to anyone else?

I got into my 1.6l 2006 megane the other day and put both the front windows down to clear the condensation on the outside and then my window (driver side) wouldn't go back up. I left for work thinking I would stop at the local dealer on my way to work but about a mile into my journey there was black smoke pouring out of the window gap in the door. I pulled up as quickly as I could, got out (and got my baby son out) and as we ran from the car my door burst into flames! My car isn't even 4 yrs old yet and I think this is horrifying. It was incredibly traumatic as I am sure you can imagine. Can anyone else tell me if this or anthing similar has ever happened to them? I am trying to gather whether this is a common fault or isolated incident before contacting Renault. Thank you