A cautionary tale. A couple of days ago we went into the van for the first time for a few weeks (to get it ready for a trip to Spain this weekend - Yippee!). Our van has a garage, and I noticed that the roof and side walls of the garage were covered with brown spots. These were thick, and sticky. We emptied the garage, and cleaned the offending spots, then started to consider what might have caused them. Eventually we found that - in a group of 4 cans of coke that we had - perhaps rather stupidly - left in the van, one had exploded. Presumably this was something to do with the extreme cold weather followed by a thaw. We will not be leaving cans of fizzy drink in the van again!