I always got the impression this was more of a thing English speakers picked up on but not Spanish speakers. Kind of like how pillow could be seen as "pill" & "ow" (pill = unpleasant, ow = "that's painful"), which would be ironic to a person with rudimentary English skills, but just a normal word to a native speaker.

A better example is therapist: in any other sentence you wouldn't notice what I'm getting at, the pun is there but the stress on the words is different. Dr. Pornestach, Therapist, it's possible to push the conjunction but we mostly don't.

"No va" is just "it's not going", which is about as awkward a way to describe a non-working vehicle in Spanish as it is in English. If my Nova broke down, yes, I'd make the pun.

Now, if they'd tried to sell the Chevy Es Chingado...

Oh, that's a really good one.

I'll take swords for $400, Alex.