The other day I noticed that the floor on the passenger side of the car (both front and rear) was soaking. Seats and everything else was OK. Also under the spare tyre in the boot was wet. I can't see any obvious reason for this and there seems to be more there each morning. My car is a 1964 Ford Focus 1.6 Diesel Econetic. Would appreciate any help anyone could give me to solve this problem. Thanks in advance.