Oh, that so blows! I don't know if it would help, but I leave my stuff in my car in a dirty old dark colored rubbermaid bin since I don't have a trunk (drive a Honda Element). It helps that the windows are tinted, and the bin is tucked up behind the back seat kinda low down from the windows so isn't easy to see. There's only one place I go riding that I actually drive to, and it's a fairly busy park, so I don't worry too much about break-ins, but I am cognizant of it.

You lost some really nice stuff -- I'm so sorry. Not to mention the pain of having to get your car fixed.