Exactly, think fighter planes at millions of dollars a copy. That should give you a feel for what new cars are going to cost to comply with this crap. But don't confuse fighter planes with the performance you can expect.
Part of that millions of dollars a copy is to pay for the r&d needed to develope the particular systems/materials.
Thats done.
Sorta like teflon...some of the developed technology will or may become ubiquitous.