Like the idea of the washer bottle. A few years ago on the approach to the euro tunnel, fortunately at the end of the holiday so on my way back, there was an appalling smell coming from somewhere close to me. Obviously not from my car and the smell disappeared once I had cleared passport control so continued on but on getting back home and checking the car over I spotted the washer bottle was nowhere to be seen. It had fallen off and melted on the exhaust manifold !
Another thing I now check regularly.
