Rome has transport of various kinds available. Private vehicles are one of the most common modes of transport used, but they do not fall under the commercial ambit. Some agencies rent out cars on pre-fixed rates. These cars can be of various makes, models, age and seating capacities. They can be rented for a day, or for much longer. Other options in public transport that may be available in Rome include the AMTRAK trains and bus services such as the Greyhound buses. These are cheap and fast ways of traveling.