I don't think anyone was suggesting the OP was stupid . We had a pushchair stolen from our car as well ,msny years ago :). I think they are particularly attractive as they can be sold so easily for a few pounds . And I'm afraid that I also think that thieves take note if they happen to see a pushchair being left in a car . It's a bugger ,and all you can do ,as said ,is take a calculated risk .But I suppose people should be aware that it is a risk . Sad but true .