Automobiles are faster than walking or riding a bike if you are going a long way. They can carry more than one person and a large amount of luggage. Depending on local public transport quality, they can also be faster and far more convenient than using buses, bicycles or trains, and can often go where public transport cannot. 4-wheel drive "off road" vehicles are particularly good at reaching places difficult for other wheeled transport due to bad roads or harsh terrain. However, they cost more and burn more fuel, and there are many places even they cannot go.