Rationing
License
Gasoline
Fuel efficiency
Consumption (sociology)
Air pollution
Air quality index
Car ownership
Business
Natural resource economics
Indoor air quality
Agricultural economics
Environmental economics
Economics
Environmental science
Transport engineering
Public transport
Environmental engineering
Economic growth
Waste management
Engineering
Automotive engineering
Geography
Computer science
Health care
Meteorology
Social science
Chemistry
Organic chemistry
Sociology
Operating system
