20 automakers combined produce 99% of the cars in the USA.

And they just met with the NHTSA about automatic braking systems, and they will be standard equipment starting in 2022

Toyota has promised to have it on all of its vehicles by 2017, and many vehicles already have the sensors and technology in place.

AEB technology is available on more than half of new cars being sold already, and 9% of US drivers already have AEB in their vehicles, according to a AAA survey, even though the median package price that includes the technology is $2,775. And as with nearly all driver assist technology, people who’ve experienced AEB in action are more likely to trust it than those who haven’t (71% versus 41%).

https://techcrunch.com/2016/08/25/aaa-study-sheds-light-on-aeb-systems/

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The Ausco Lambert early hydraulic disc brakes

Available on 1949-1954 Crown Imperials, Town and Countrys, and other large Mopars as an option. It was a 40% increase in brake surface area over the 12" drums of the day... these cars were nearly 4 tons, and the 12 inch drums weren't up to it.

Unlike the common disc brakes used today, based on the common disc brakes that became familiar in the 1965 roll out of Corvettes, these Ausco Lambert had 360 degrees of both sides of the discs in contact with the brake pad liners, like the similar clutch contact method

This illustration shows the stationary, split brake disc. When the brake pedal was applied, twin wheel cylinders pushed the split disc apart so its friction pads made contact with the insides of the spinning housing. Self-energizing action and extra braking force was provided by six steel balls riding in ramp that wedged the disc apart. Metal return springs retracted the works when the brakes were released. The system was designed by Ausco-Lambert (aka the Auto Specialties Manufacturing Company) of St. Joseph, Missouri, and further developed under license by Chrysler. After Chrysler dropped the costly unit for 1955 (improved vacuum boosters gave new life to Chrysler’s drum brake systems), Ausco-Lambert changed the housing material to aluminum and tried to market the brakes over the counter as the “Double-Disc Safety Brake.” Unfortunately, it was overshadowed by European-style, floating-caliper brakes

http://www.hotrod.com/articles/chryslers-pioneering-disc-brake-system-explained/

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the 1971 Rapid Transit System Road Runner show car... has a strange colored set of taillights, but there was a good reason

The light would light up green when accelerating, yellow when the gas pedal was released, and red when the brake pedal was pushed

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