Driving out of Bishops Waltham, Hampshire last night, just after the road went to a 40mph limit saw a whie van parked on the grass verge facing me on my side of the road. The rear doors were open. Looked in my rear view mirror to see a dirty great speed camera in the back of the van. The police are getting very devious. It wasnt a problem for me as I wasnt speeding, I just had never seen this before. Watch out!