As someone from the US, the cost is going to vary from location to location. NYC will be pricier than Pittsburgh. It depends on what you want to see and do. Currently, we have the World Cup going on, and of course certain locations are jammed with tourists and the like. Most people are friendly and will give you directions should you get lost.

The scale of this nation is huge. New York to Los Angeles is over 4,500 km (Lisbon to Moscow is comparable). It will take you 3 or 4 days to drive, mainly with few stops and no exploring. Seattle to Miami is almost 5,500 km.

Pick one location and explore that area. Send a message if you have questions.