With petrol prices continuing their upward trend (yesterday I saw it at Â£1.38 a litre or $8.22 US gallon) and despite my reduced costs from having a Prius, I have been considering an LPG [ame=http://en.wikipedia.org/wiki/Autogas]Autogas - Wikipedia, the free encyclopedia[/ame] conversion as lpg fuel is taxed much much less over here and is only Â£0.60 a litre or $3.57 a US gallon. I know that some European owners have successfully converted their Gen2's to lpg using a standard system and a circular tank in the spare wheel well. Does this system transfer to a Gen3 Prius? The projected cost of conversion is around Â£1,500/$2,400 via a registered installation company and should pay for itself in no time on my mileage. Has anyone on here got any experience of lpg for a Prius or any useful experiences or comments to add. I am aware of some of the negatives attributed to lpg as a fair few of my colleagues run petrol/lpg non hybrid cars, but an lpg conversion would give me the cost savings of running an 80/90 UK mpg car (I get 50 UK mpg on petrol and lpg is half the cost). It's also cleaner running and produces less smog. Would also like to hear what the other Prius cabbies think on this. All comments appreciated.