However, it was written by a technical illiterate. "Mufflers" don't have anything to do with air quality.
Mexican trucks are not required to have catalytic converters. Many of them are powered by very old diesels on their third 3-million-mile overhaul. If you have ever driven on a Mexican highway with their trucks and god-forbid buses, you would remember the peculiar smell of Mexican fuel ...you would be deaf from the noise of their jake-brakes ....and blind from the thick black smoke they spew. Mix that heady aroma with a bit of essence of burned clutch and fried brake, season with 10 million unsanitary taco stands, the use of roadside ditches as open latrines, and you could probably smell Mexico from outer space. Some neighbor!
There is also a reason why Mexican country-folk (aka "peasants") wear those tire-tread sandals (huaraches). The country's "roads" are lined with tread cast by Mexican re-tread tires. Free shoes!
¡Ay Chihuahua, dude, where's my clothespin!
Been lots of free shoes littering Texas highways this hot summer we've had. Kinda like running a gauntlet during the nighttime hours.
You must be one of them big government types that likes all kinds a regulation Kenny!
We don’ need no stinkin’ catalytic converters and brakes and sewers and traffic rules and stuff.
Juan Galt
Funniest post I’ve seen from you