dude do you know what is in car exhaust? Carbon Monoxide, Nitrogen dioxide, Sulfur dioxide, Particulate matter, Benzene, Formaldehyde, Polycyclic hydrocarbons. 2 of the chemicals alone will kill the plants (benzene kills plants and aquatic life and the soot from the exhaust will cover the plants making it impossible for plants to photosynthesize) and if you walked into an area where even part of this is being pumped into a small semi-confined area, you would at the very least raise your rates for cancer drastically. After reading some of your posts i think either your brain has been half melted from spending too much time under solar bottles or you just like to sound dumb. Sorry. I still love you.