Remind me:
What would they be?
Oh, I remember!
Things like the harm to health of "traffic" pollution.
Which turned out to be caused by buses and trains and the power stations that fueled trams and trains.
Or "car made" global warming.
Funny how the above, and domestic heating, and the like, which generate far more CO2 magically don't contribute to it, and how, without any cars, planets throughout the solar system are experiencing it!
And the harm that that supposedly does.
Like flooding Pacific islands by between 8 and 80 feet.
When even the global warmers latest computer models put it at between minus 1 and 8 inches!
Then, of course, there's the classic:
Social "cost" of congestion.
Motorists are blamed for the £Billions congestion costs THEM!
Would you like to remind me of any more I've forgotten?
Like the noise and pollution caused by cars:
Having to negotiate speed bumps, perhaps?
Didn't anyone ever tell you that when you're in a hole:
Stop digging!