First of all thanks for those who have contributed so far - some really useful stuff.
I realise that America is absolutely huge. I'm now thinking more like 6-8 weeks to give me a greater opportunity to see things, (I understand it's pretty straightforward to get up to a 3 month travel visa,) but I know that that won't really scratch the surface.
Broadly speaking I was planning on flying to the east coast and then back from the west coast, but possibly zigzagging a bit on my way across. I had a quick look on BA's website and there are just under 20 routes over the Atlantic from London, so where I start and finish is very flexible - I won't be booking anything for a while.
Some more specific responses:
Go anywhere but a major urban center. Or at least visit one that cannot be replicated elsewhere, like New Orleans. Visit the Mountain states, the Southwest, the "flyover" parts of the country (Kentucky & Tennessee are particularly outstanding. Sip real bourbon, watch a Corvette being made, get a Louisville Slugger with your signature burned into it, explore a cave, and watch the Kentucky Derby, all in one day).
Amtrak has rail passes similar in concept to EuRail or BritRail, check into that. Pack half as many clothes and twice as much money as you planned on.
Bottom line, we have citizens that spend their entire life here, and only see a miniscule fraction. Visitors can only scratch the surface, so don't try to shove "America" into one visit. Plan to come often, and leave lots of money behind.
Great post John. The first paragraph really sums up what I'm looking for. I'm used to big cities in of themselves, (I live in London and have visited the majority of western-European capitals.) Having said that I don't want to completely avoid them, but would want to go for something more than it just being a big city, with the attractions that brings. NYC, New Orleans and Las Vegas stand out as examples of cities with something extra. I'm not planning on this being my only visit - I think I'll be depositing plenty of my money in the US over my lifetime, don't worry about that! However I'm unlikely ever to do so on the same scale.
i suggest picking 5-10 places you really want to go to and we can probably help you a bit better after that.
Leading on from above this is perhaps a bit trickier, as the cities are obviously what I've heard more about but I don't just want to go on a tour of the big US conurbations. Here are a few off the top of my head: NYC; New Orleans; Las Vegas; Grand Canyon (have to see it in my lifetime); the lakes; Yellowstone/Yosemite; Des Moines (my only basis is hearing someone waxing lyrical on it); Kentucky (having seen the Derby is on in May this is something I'd love to see.) I want to see bits of America that are often missed out or harder to visit on shorter trips. Additionally I'd love to see things that only happen in the time period I'll be there, (around April/May/June,) such as the Derby.
Basically, what do you want to do while you're here? See the sights? take photos? mountain biking? shopping in the city?
See the sights and take photos would probably sum it up! It sounds pretty corny, but I want to experience the sights & sounds on America.
Another thing to think about, since you mentioned mid-April, is that some places will be in the middle of thawing out from winter. So some places will be the equivalent of a mild winter in the UK (like the midwest/Mountain states).
The weather doesn't really bother me, so long as I'm prepared! I'm currently trying to get a job in the Alps for the winter so should be used to the sight of snow!
I don't know how things are in the UK, but many car rental places in the States won't rent to someone under 25. Some will charge a fee. So make sure you do your research and find a place that'll rent to you - that way it won't be a surprise once you get here.
I had a quick look at the Avis website and you're right, they will rent to under 25s but add a (pretty hefty) surcharge.
I'll just chime in on getting around. If you can narrow your choices down to a small number of destinations (and the surrounding areas, of course), I'd strongly suggest getting an airpass from either One World or Star Alliance (depending on how you get over here, they'll give you the better deal if you use them to hop the pond).
I'd never heard of these before, they sound quite good. The
pricing is done on distance. As a comparison, how much do one way flights tend to cost? (I realise this is a very broad and badly put question! An answer from personal experience of any route would help to illustrate though.)