[concordDance]

> I'm not completely against fleet-wide averages, but I would like to see a competition.

They seem absurdly silly. Just put a tax for each car of $$$ per g of CO2 per km. Then you're properly targetting the thing you care about rather than a lossy proxy. Or even better, increase tax on fossil fuels!

[vanviegen]

I think the idea is that car manufacturers are motivated to internally subsidize low emission car development and sales, so that they can sell high margin high emission cars, making the latter even more expensive. Double win?

[formerly_proven]

g/CO2 is widely taxed and fuel is typically one of if not the highest taxed consumer good, e.g. in ger 2/3 of the fuel price is taxes.