When he isn't tinkering around with McLaren F1 supercars and Batmobiles, Gordon Murray is working on fuel-efficient -- or even fuel-independent -- city cars. Autocar just got its hands on the gas-powered T.25 and battery-powered T.27, and reports a pleasant experience with the three-seaters. We already knew that the T.27 crashes well and offers efficiency comparable to an astounding 350MPG, but we learned even more info today. The 74MPG T.25 will cost £6000 ($9467) should it ever go into production, while the T.27 would theoretically run you a grand more, but also get you 100-130 miles between four-hour charges. The body and interior is simple and innovative which becomes evident before you even get inside -- stepping behind a windscreen that pivots forward on struts. Neither travels at high speeds (90mph for the T25 and 65mph for the T.27, though it's faster off the mark), but these cars don't aspire to compete with Formula 1 racers; they're going for efficiency and simplicity -- and evidently doing it pretty well.