According to http://www.autoexpress.co.uk/news/66260/pr...its_113mpg.html, Toyota engineers are trying to make "The firm's next Prius... so efficient it will be the first production car capable of returning more than 110mpg. The newcomer is being developed to try to improve European sales. While the car has been a success in the US, it has met a mixed reaction on this side of the Atlantic, due to the popularity of diesel models. But now we've been told that engineers working on the new Prius have a fuel economy target of 40km/litre - a mind-boggling 113mpg." They are also trying to get the zero to 62 a second faster too. Hopefully we get that new one over hear in the States too in 2008. I'd imagine that this would be the 4th Generation Prius.