Whilst impatiently waiting for my car to copy the Nav data over from the DVD to an SD Card today I decided to have a look in the boot (curiosity). When I lifted the carpet up to look in the spare wheel well I noticed that the battery cover and the top of the spare wheel were covered in drops of water, I couldn't see any water at the bottom of the well, neither could I find any evidence of water anywhere else (carpets dry etc).

For clarification, it absolutely chucked it down all day today, the car had done a short run to Tesco and back but no further.

I can't figure out why they would be wet, any ideas?

TIA

Alistair