Huh? Aren't the tractors using a loophole to avoid emissions regulations?
replyYou can do a lot of things if you don't care about the spirit of the law and your negative externalities.
Which loophole? Using a remanufacture engine?
replyYes, they're engines that you wouldn't be allowed to build and put in a new tractor.
replyLike, the signals seem pretty clear to me. The spirit of the regulations is that these shouldn't be produced and put into operation anymore. The company is doing it anyway.