Heh heh. I see those you tube ads for that plug in gas saver. I remember back about 1975 when cow magnets strapped to the fuel line were supposed to do the same thing. They made great magnets though.
Magnets (attached to audio cables and other aspects of sound equipment) are also sold to audiophiles as somehow improving the sound quality. We down-to-earthers call that snake oil.
I assume this would work on car audio as well. 
Works best if you huff it.
A baby-Hemi? Or was a wedge engine offered in the ‘53s?
Yes, it was known as the Red Ram engine, and although it was a hemi, it shared no internal components with its big brother hemis.
Sofas in an automobile!
Did they seriously design seating with the idea that cars travel only slowly in a straight line, and accelerate and brake gently all the time?
They also did great in roll overs with no seat belts on drop top models (and others)… 
The early 1960s GM buckets I admired and sat in as a kid were some improvement, as long as one used the seatbelts that became standard late prior decade.
I think they designed seating to be comfortable and not feel like you’re strapped into a roller-coaster seat for hours at a time. A big bench seat offers you some comfort and freedom of movement, like you’re sitting on a couch.
What’s more important to you, safety or comfort? I think you can guess what my answer is. 
Volvo seating, for one, has had a reputation for striking a balance somewhere between cushy, sink-in comfort and Recaro-stiff restraint behind the wheel.
Nothing wrong with the seating in most Toyota Camrys or Chevy Malibus from 2010 to present (Malibu’s last model year just ended)
My 79 Scirocco and 83 GTI had ‘bucket’ seats far more comfortable than the bench in my 72 Duster.
I’ts shocking to see that it’s mostly open space beneath the padding and upholstery of a domestic 1960s or '70s bench front seat:
1968-chevrolet-c10-bench-seat-spring-assembly-broken.jpg (2048×1340)
It’s also shocking to some people that any open space directly behind the seat in your link is taken up by 20 gallons of gas sloshing around the tank that’s inside the passenger compartment. Think about lighting a cigarette while sitting on top of a gas can.
Thank you, never knew they did not share parts. My brother’s first car was a 57 Dodge with the Poly. The Plymouth engine became the basis for the 318? My first car, a 60 Dart had a 318.
I had a 56 Desoto with a 330 cubic inc Hemi, It had a 1/4 inch closer bore spacing than the Chrysler and a 1/4 inch wider bore spacing than the Dodge. So Chrysler made the early Hemis in 3 sizes and weights with no inte-changable parts. As fat as I know,Plymouth never got the early hemi. IO know the Plymout raced in Nascar in 57 with a 318 polyhead with two 4 barrel carbs. rated at 290 hp.. The polyhead was a cross flow head like the Hemi but only a single rocker shaft unlike the Hemi’s two per head. The 318 poly was replaced in 65 with The LA engine that was much lighter and cheaper to make. The La was faster off the line but it could not match the earlier engines better breathing at the top end.
For the little 273 and 318 with the small ports and 1.78"/1.50" valve sizes that sounds right, but not for the 340 that ran a 2.02"/1.60" and the 360 ran 1.88"/1.60" size valves (same as the poly 318) as a rule of thumb, I’d want to see some numbers, the poly was a heavy engine… For the 318’s, yes the poly out preformed the LA, but the 340 dominated both… lol
Now relieve the top of the cylinder of the LA 318 and slap some 360 heads on it and now the LA wins… less rotating mass just spins up faster and higher with all things being equal…Or heck just slap some magnum heads on it with some oiling mods (LA vs magnum oil the top end different) and you have a capable little engine…
I was only cpomparing the 318s. The high speed passing on two lane higways was much better with the 318 poly o=in my 61 dodge dart phoenix that in my LA 66 Plymouth.and we did not have extensive interstates here in th50s and 60s. Only the NY Thruway and most of my driving was north and south down two lane roads Some of it was on NYs infamous 3 lame roads where either direction was free to use the center lane to pass. Talk about exciting!, you could use them up and down hills and around blind curves.
Talk about exciting!.