Are cars the new tobacco? As Paris prepares to charge big vehicles and London extends its Ultra Low Emission Zone, some argue that gas-guzzling vehicles are becoming a public menace.
France begins crackdown on ‘autobesity’
Sizing up: Over the last decades, cars have got wider, bigger and heavier. Glossary
Smog - A kind of toxic fog caused by high levels of air pollution.
SUVs - Sports Utility Vehicles. A type of car that sits high off the ground and can drive off-road.
CO2 emissions - When a gas is let off from something, like a car, it is an emission. Carbon dioxide, or CO2, is a greenhouse gas that contributes to global warming.