Oh chorister don’t be such a bore and do pay attention yourself.
I fully recall the trajedy of the commons and why it failed.
However, I did think it was not a great example, if you pay attention in your older years
When it comes to driving cars and the costs entailed then it’s not free in that sense, as per ehe examples already given.
In reality owning a car is expensive …. And road tax etc
Was not talking about bikes.
It was in relation to traffic and congestion.
And you forgot the potential ULEZ AND London congestion charge so actually it’s no zero marginal cost technically speaking…. One could argue .
So there …