Every Popular Science mag is now online.

Yeah, but that's not all. The PopSci archive page is just a selective presentation of the Google Books magazine archive. There are numerous magazines other than Popular Science available, and it's all searchable. "Advanced search" lets you confine the results to magazines only, alter the date parameters, etc. here's a search result for Popular Mechanics magazine, for example.

And here's the "Dodge Dart" magazine search, and here's "Plymouth Valiant", and here's "Slant-6", and here's "Slant Six" (really hot search; take a look at the results), and here's "Dodge Lancer" restricted to the relevant '61-'62 cars...here's the article I used when I was 15 to persuade my dad to buy the green Lancer.

Times have surely changed...take a look at this objection to the dome light in the 1960 Valiant!

Frozen tools

Smokey's adiabatic engine

Ultrasonic fuel system on a Duster

Now that this is available, we are all hosed...nothing's gonna get done ever again; this is a worse time suck than television!