Which auto pollution control measure became universally adopted after the US Clean Air Act Extension of 1970?
Correct answer: Catalytic converter devices

Eva
Catalytic converters get stolen off vehicles (often in parking lots)and sold for cash.

Andi
Eva, yeah, how well I know that!! Somebody wanted my catalytic converter off my Prius to buy drugs or whatever and it would have cost me $3600 to replace it. So I was in no big hurry to replace it right away for fear somebody would just steal it again. I drove my other vehicle around for abt a month, then finally replaced it. Thankfully, 😅 my car insurance replaced it for $500-my deductible. But still it made my car insurance go up because I had to file a claim.

tia
They seemed to take a lot longer to arrive in UK

Miss Sue
They don't work very well.

arohanui
very confusing use of the word universally