We (2 adults) will be staying in Valparaiso for about a month (january 2014) and during this month, we would like to travel to Machu Picchu. Is it possible to rent a car and drive all the way to Cusco and come back? Is it safe to drive in those areas? Is an automatic rent car expensive to rent it for 10 days? What about gas in Chile/Peru? If by car is not recomande it, what other method do we have to travel to Cusco? We are not interested in flying. Only by car, bus or train.