For the most modern of cars, emissions testing in the tailpipe became passe. Now, there is some computer module the tester hooks a cable to for testing purposes. What is the name of this doohickey module, and how does it work? What model year did this start with?
Is this gizmo periodically self-checking the emissions all the time? Can’t it be wrong? What keeps this hugger in perfect calibration over the life of the car? (Must be some hugger to never need re-calibrating!) And, what happens if this bugger fails? Does one have to throw away a perfectly fine car (or go broke fixing the bugger) just because we’re so stupidly dependent on machines? Can one request an old-fashioned emissions test if that gizmo is fried?
We have boldly gone where no man ever wanted to go.