Why worry about the small amount of gases coming out the back of a car when you've got these things (below) flying around way above us in the skys. I don't see any emission control on aircraft...Why's that then?
>>>>A plane like a Boeing 747 uses approximately 1 gallon of fuel (about 4 liters) every second. Over the course of a 10-hour flight, it might burn 36,000 gallons (150,000 liters). According to Boeing's Web site, the 747 burns approximately 5 gallons of fuel per mile (12 liters per kilometer)<<<<<<