I think Most phase 3's emit no emissions because they aren't driven.
But I think this could be great for a daily... the year is 2028 Fuel is $4.00 a Litre driving in the city requires a emission pass suddenly I have the option to continue use of my dinosaur vehicle.
Maybe we can do conversions similar to how we did for LPG...
Government could even look in to incentives.
Thinking out loud