As Honda put it, they did not have their sights on saving the earth or reducing our dependence on foreign oil when they designed the HAH...they were "just trying to build a better car". And I think they suceeded. If you want ultra high MPG (in exchange for a 4-banger engine with limited power and interior that's cramped for a family of four), buy a Prius or a Civic. If you want the effortless power and smoothness of a near V-8 engine with the economy of a 4 cylinder engine and the interior room and fit/finish of a luxury sedan, then go for the HAH. It's great to get 30 mpg around town and 45 mpg on the freeway, knowing that you can still smoke that Beemer off the line when the light goes green if you want to. Let's face it, automobiles are for transportation, but they're also have traditionally been "fun" as well. I'm glad that Honda has kept the fun in motoring while also saving fuel/reducing emissions with the design of the HAH.