Sorry, Arlie. Not sure I'm on board with this. Do we REALLY want millions of engines injecting water vapor into the air, roughly double the amount that the burning fuel causes already?
But who knows, it's barely an idea at this stage
I can remember the "first" gas crunch of the early 70's, I was stationed at NAS Miramar N of San Diego. Crower actually marketed a kit to convert a V8 to a 4 banger for better fuel mileage. I could not visualize driving a 220 cid 440, LOL. That is about the time I swapped the 340 into the old 70 RR body. That was a lot of fun. You could tie one on with a 383 RR and it didn't matter if you beat him or not. The look on his face when you raised the hood with the 440-6 flags and there was that little bitty SB in there was priceless, LOL
This is right after "it went in," before the cast VC and headers went on. I was broke for awhile after the swap