My friends and I are currently in our penultimate (year 12, we're 17) year of sixth form (or in America, High School). We would like to do something special when we graduate from university (should be the summer of 2016, touch wood) - a road trip round America. We will probably be around 21/22 when we get round to doing this, but we know it will be expensive when we come to do it so we're thinking about it now to give us time to save up for it.
What we would LIKE to do is possibly fly from London to New York and spend a couple of days in NY, experiencing the sights of the Big Apple, and then get an internal flight from NY to LAX, picking up a hire car when we're in California and then driving round for about a month visiting LA, San Francisco, San Diego, Las Vegas, the Grand Canyon etc.
However, we are also considering a longer trip where we perhaps drive from NY across the US to LA, then getting a flight back from California to London.
Realistically, how much would you say this would cost? We're not fussed about accommodation, as long as it is safe (we'll even sleep in the car if needs must).
How much should we budget in total for a trip like this? Would we spend a lot of money on entrance fees to national parks etc or are some of them free?