Didn't know that, you got some more info, data and sources on this?
Not sure which you're referring to, but most of what I referred to is up on the long VW Dieselghazi thread with citations.
Obviously there's the cite for FCA getting sued linked right there.
Navistar going to the EPA and asking for help from the EPA in the *exact same situation* that VW was in - couldn't meet the regs without SCR. VW lied and claimed they did it with EGR, Navistar couldn't get it to work, asked the EPA for more time, the EPA granted it with the caveat that if Navistar failed they would have to pay a pre-arranged discounted fine amount, Navistar didn't get it working, looked like idiots because "VW had gotten it to work, why couldn't you" and ponied up. Between the fines and angry customers with 'beta test' EGR systems, it almost broke them. Long but good article on it:
http://www.commercialmotor.com/news/navistar-s-spiral-of-despair-some-background
More:
http://www.justcarnews.com/years-later-navistar-is-haunted-by-a-big-engine-blunder.html <-- reprint of an original Bloomberg article now behind a paywall. Note that you will not see any articles about them being sued by the Feds over this - they got their waiver on conditions that they couldn't meet, so they ponied up. Cummins also tried EGR, couldn't get it to work and bailed to SCR a bit earlier than Navistar.
Supplemental article about the agreement and aftermath after everyone agreed Navistar had failed:
http://cpatrucking.com/navistar-gets-to-pay-penalties-for-emissions-noncompliance-epa-rules/
Lotus bumper/headlight height/etc., waiver, including the original filing text:
http://www.sandsmuseum.com/cars/elise/thecar/body/fedexemption.html
http://www.sandsmuseum.com/cars/elise/information/technical/waiver2004.html
FCA waiver article: Can't find it in the monster VW Dieselghazi thread now but someone posted an article that pointed it out - think it was rick. I'll go look again later.