That "plume" of black smoke was his "Exxon endorsement" - he probably poured more out his tailpipe than the Exxon Valdez
You were wise not to continue his game because you preserved your car while he puked 50k of mileage in parts out of his exhaust. I'm surprised you didn't notice an oily film on your paint or metallic chips blowing at you. Usually when I come up to a "ricer" like that - I turn my wipers on.
HONDA {tranlates to English} = Crop Duster
