K Charles wrote:
"engineers are entirely to smart not to be working on ways to simplify the emission"
Not true, they have been making emissions more complicated for the last 50 years.
But at the same time they've made the powertrain cleaner and more powerful.
I'll take clean/powerful and more complicated over smoke/smog and simpler any day of the week.
If it was only one engine, no big deal. But when you consider the many thousands of engines out there it makes a difference. Gasoline engines are much more complex than they used to be too. But they are also much cleaner and more powerful than ever.