Bus travel is a common, less expensive way of traveling domestically in the United States. Passenger air travel
in the United States is notoriously more expensive
than in Europe, leaving many to take the longer journey on the ground.
Compared to plane travel, buses emit less green house gases than planes, and comparable levels of greenhouse gases to trains. Pollution from planes
produces two major greenhouse gases: nitrogen oxides and carbon dioxide. Data released by Flix bus compares the cost and environmental impact of commonly traveled west coast destinations across different vehicles.