Some engines you may not know about.

Interesting video and 3 stood out in my mind as realistic and useable and impressed and sort of surprised never took off more so:

1966 Honda inline 6 revving to a whopping 20000 rpms - pretty cool design

1984 or so Honda 500cc V4 8 valves per cylinder racing bike also near 20000 rpms able to produce 130hp out of such a small engine - pretty cool once again being Honda engineering

1998 chevy monster V8 big block 9.?L 572 cubic inch engine able to produce 650lbs. of torque or thereabouts - WOW, surprised that one never took off although mpg would suck. I once was in the late 80's was in a cadillac big block 500 cu. inch engine joy riding as a youth with friends and that thing got up and went but was very unreliable overheated that night having to put water in the radiator and am sure got like 8 mpg or so, especially the way the driver was driving that night.

I never knew of these 3 engines out there in limited production and would think I would have heard of the 1984 Honda cycle engine and 1998 chevy big block engine since fairly recent in history?

Just like today though, BIG engines are going by the way of the dinosaur even in vehicles. They want instead of a big block bigger engine, they put in cars like a 2.0L turbo 4 banger, 3.0L V6 ecodiesel in the Ram, even I think a 2.7L now V6 in the newly redesigned Ford F150 squeezing almost as much power out of these higher revving smaller engines as the V6 and V8's being much more cubic inches. I for one, so far, am not a fan of these higher revving smaller engines since I could be wrong, but higher revving in smaller engines will not last as long or be as reliable as their bigger brother counterparts.

I test drove in our 2014 Hyundai Santa fe the 2.0L turbo 4 banger in that SUV vs. what we bought was the 3.3L V6 290hp normally aspirated engine and my seat of my pants, I prefer the quieter, not as high rpm revving, V6 vs. the 4 cylinder turbo by far and believe it or not, gets within 1 mpg on the hwy. difference is all since the rpms are lower on the V6 and quieter and thus not working the engine as hard as the turbo 4 banger. Longevity remains to be seen, but my money is on the V6 engine.