The measure to make vehicles weighing 1.6 tons and over pay 3x the parking rates for the first two hours has passed in Paris.
Now, let's get that in place for London and many other other places to help slow, and even reverse, this trend towards massive personal vehicles.
The question was if heavier cars should pay more. Heavier cars are more expensive to buy, so this means that people who can afford a big car, will pay more. It's a sort of progressive taxation by proxy.
For context: don't forget that this isn't the US: not everyone drives an SUV/pick-uptruck. Here you can see the size of the most popular car in France, compared to a pick-up truck.