Gingerishidiot OP t1_j6d5cl8 wrote
Reply to comment by CyclopsRock in eli5: Why are older cars with catalytic converters fitted not exempt from the London ULEZ charge? by Gingerishidiot
>Nitrous Oxide - we don't want Sadiq Khan laughing do we ?
CyclopsRock t1_j6d6ixe wrote
Haha! Woops - nitrogen oxide!
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