The answer to " Does Chrysler have a V-8 engine that gets 24 mpg" yes, yes they do. My son has a Charger Daytona 5.7. And yes it does get 24 mpg. Thats usually with me driving it. Chrysler does things with their push rod engine that an over head cam 4 valve cannot do. Multiple Displacment. I like overhead cams and 4 valves per cylinder. But I'm not ready to throw in the towel on the push rod engines yet. There is more than one way to skin a cat ( kind of gross if you think about it). We don't have to follow Europes lead on cars, I could give a good rats... butt what they do with their cars. I like the Hemi and as a Child of the 60's, I waited more years than I care to remember, to own a new HEMI car. Its taken until recently to get to this point. Its been an evolution so to speak. I went through the 80s and most of the 90s with no glimmer of hope. Now we have a chance to own a little Americana. By chance do you watch the LeMans series and have you seen over the last few years when American cars compete head to head with an European car in the same class. We more than likly end up on top. Viper and Corvette come to mind. Yeah ... you guessed it, push rod 2 valve. Kicking butt and taking names, like Jag, Ferrari, Porche, ect. You also have to remember. 24 hours is an endurance race also as well as horsepower. The more valves you have the more chance you have to burn one. Don't sell American technology short. 4 valves per cylinder has volumetric efficency no doubt. But when you want to be top dog... the pushrod rules for now. Top fuel is a good example. They could run any motor they want, but its the old style 60's HEMI that they build around. Talk about vol. eff. Put a turbo or a blower on a HEMI and you run the show... no ifs ands or buts about it. Will it always be that way? Who knows... only time will tell.