You mean, the SUV which sits in my driveway? The one that drives less than 500 miles a year?
The one that is parked in front of the house powered by solar energy?
Why don't you think of who the real problem is. Cargo ships running on bunker oil (This is the nastiest fuel you can imagine). Did- you know, they will typically switch to low sulfur fuels before entering most countries, because burning bunker oil is illegal nearly everywhere.
How, about you target the rich people, who fly private jets everywhere. Let's not even mention the mega yachts which are basically floating cities.
Instead, of the fellow who happens to own a large vehicle, in order to haul things, and move children between events, while being able to support the proper luggage/equipment.
Also, lastly, Would you prefer me drive around in my big SUV which gets pretty decent gas mileage (in the 20s, excellent for a large vehicle), has modern pollution systems, catalytic converters, etc.....
Or... would you prefer I drive around in my tiny racecars, with a 1,000hp turbocharged LS, absolutely no emissions equipment, not even a muffler.
Both are completely legal.