My 07 Zafira CDTi is actually a very fine car - except for one big problem, which is damaging to the urban-travel families the car is aimed at. I live in an city area surrounded by a rookery of revenue cameras - but Vauxhall, to "comply" with EU Emissions, have fitted this car with a diesel particulate filter that demands you should take it onto a motorway every week or two and trash it for 20 minutes without going below 50 / 60 mph to clear the DPF. So I have to make otherwise unnecessary motorway drives just to keep the car going. You feel like the guy in that film Speed who will blow up if he goes too slowly. Since I am burning up 100 miles a month of un-needed mileage and fuel, is this the stupidest bit of EU motoring law ever?