Air travel * Quicker * On Airfare.michaelbluejay.com, author Michael Bluejay notes that on a medium-length trip from New York City to Detroit, a flight will take about 4½ hours (including an hour driving to and from the airport and an hour waiting in the terminal) while a car ride will take 9½ hours, a bus ride almost 15 hours and a train ride about 16½ hours. * car bus and train travel are more dangerous * Bus train and car are cramped, no refreshments etc * Surprisingly plane tickets can be significantly cheaper, According to Michael Bluejay, as of October 2008 a trip from New York City to Detroit cost $86 dollars by plane; this was comparable to slightly cheaper train ($75) and bus tickets ($80) tickets and significantly cheaper than car travel ($115). * If no planes, transatlantic travel is boats
Boat disadvantages * Motion sickness * Viral outbreaks on boats, These viruses run rampant on cruise ships because of the large number of people in close proximity to one another for extended periods of time

Carbon dioxide emissions from shipping are double those of aviation and increasing at an alarming rate which will have a serious impact on global warming, according to research by the industry and European academics.

Aviation carbon dioxide emissions, estimated to be about 2% of the global total, have been at the forefront of the climate change debate because of the sharp increase in cheap flights, whereas shipping emissions have risen nearly as fast in the past 20 years but have been ignored by governments and environmental groups. Shipping is responsible for transporting 90% of world trade which has doubled in 25 years.

The use of alternative fuels
If such planes were just 10% more fuel efficient, the industry would save about $7 billion a year.
Improve fuel