So I'm looking at the given graphs in your linked article and I just don't see how you are coming up with the 12 and 20 year timeframes for payback of EVs.
Just fuzzy eyeballing (I don't see the actual numbers for the manufacturing estimated CO2, just the graph), it looks like ~10% of the lifetime emissions for a new ICE come from manufacturing. That would put the the new EV payback vs used ICE at 4 or 5 years.
At that point, it just sort of depends on how long you hold onto your ICE for.
Just fuzzy eyeballing (I don't see the actual numbers for the manufacturing estimated CO2, just the graph), it looks like ~10% of the lifetime emissions for a new ICE come from manufacturing. That would put the the new EV payback vs used ICE at 4 or 5 years.
At that point, it just sort of depends on how long you hold onto your ICE for.