Years ago, I got stuck in Monterrey, Mexico when they cancelled my flight out. I absolutely have to be back in Texas within the next day. So, we hire the best mexican taxi that american money could find. It is a well-maintained old Plymouth Fury and the driver is a dignified elderly man all dressed up in a black suit and tie! So, we drive through US customs and they listen to my story and check my passport, bags, etc. I walk back out the door, and they have this poor guy's cab up on a garage lift in an inspection bay.
I ask around and find out that they spotted a patch on his gas tank. Somebody fixed a leak by brazing a piece of metal over the rust. These bozos actually remove the poor guys gas tank and slosh it all around to see what is inside. Finally, they relent and tell him he is OK to go - however they do not help him put it back together. They did let us have tools, though, and so we get it strapped back up there and hooked up again.
You talk about one indignant little old cabbie - and one pissed off young american engineer!