"Dylan Smith" wrote

Every time they accelerated
there was a *thick* pall of black smoke. Those trucks wouldn't be
allowed on the roads here.

Think that is bad. go to Quito, Ecuador. Every truck was like a heavy chain
smoker; way overdue for an overhaul.

Denver, Colorado has some of the strictest particulate laws anywhere. If
you can see smoke, it is not going to pass.
--
Jim in NC