Would this idea work to make car emissions less harmfull? is it even possible?

Question

Okay, everyone knows a car emits smoke which is poisonous, causes smog and the green house effect right? what if you can contain that smoke, cool it, and send it back to the engine to be reburnt. would it work? would it make emissions less harmfull?

Answer 1

first of al that would make cars even more confuseing than they r and secondly it's gunna be the question of how to do it and catch it ???

Answer 2

its called the egr (exhaust gas recirculation) most all cars have em.

Answer 3

It's called exhaust because all of its potential energy to be tapped and used is exhausted.

http://www.stuffintheair.com/air-polluti...

will give you a bit more on the subject.