There are very few carb'd cars on the road these days in the USA. They were mostly phased out in the 80's and 1990 was the last year of passenger cars that had carbs (and there were only 4 or 5 if I recall)
The problem is you can drive a vehicle that's burning coolant or oil and just spewing a cloud behind it and nothing is really stopping you. I'm not sure if you can actually get a ticket for it or not.
> There are very few carb'd cars on the road these days in the USA.
Yeah, there are less, but on a summer weekend in Southern California you can expect fumes from a number of car-culture enthusiasts and their cars.
My favorite : Carbureted rotaries. The smell of unbalanced air-fuel ratio plus the smell of motor oil being burned in combustion. It's like the two-stroke of the streets. Even better when it has lost a coolant seal and you get that nice sticky white-blue coolant component to the noxious cloud left behind.
The problem is you can drive a vehicle that's burning coolant or oil and just spewing a cloud behind it and nothing is really stopping you. I'm not sure if you can actually get a ticket for it or not.