Stroll down to your local Volvo shop, better yet attend a SAE
congress expo and education seminar on the subject.

The point is, Josie, that someone with a casual interest need not be in the
dark about such things. I can learn about this technology with ease and IF it
truly interests me, go the extra step.
I'm a long time observer of the sky, planets and stars, but that learning
process started with movies and TV.

RB