Wishful thinking. They don't care what you burn, all they want is to scare people away from (foreign) diesel cars. This law came out just in time when MB and VW/Audi introduced their new generation of ultra clean diesel engines. They can't prohibit registration of those, because they meet NY (and CA?) emissions requirements. It's all politics, it's not the environment.

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'99 S420, 155k
'91 VW Vanagon GL, 150k
'85 VW Vanagon GL, 120k
'82 VW Westy, aircooled, 165k