Why are diesels apparently so hard to make clean? Surely there must be a way to take out the particulates and Nitrous Oxide. Do power power station chimneys not have anti pollution filters? My Autocruise Vista is 18 yrs old. How long will it be before I am told I have to scrap it, or only drive it when the wind is blowing in the right direction? If I scrap it, what do I buy, assuming I win the lottery? Is there any viable alternative fuel to diesel? What is the comparative pollution cost of building a new van compared to keeping my perfectly usable van on the road? And, finally, is there any way I can make my 1.9td Pug run cleaner that will please Mr Gove?