We are a couple in our thirties from the UK (no kids) and are looking for ideas for a road trip (can either be one-way or circular) which would involve San Diego. We've got San Diego Comic Con tickets for one day, but would like to explore more to make the trip across the Atlantic worth it! We're thinking something like 14-18 days including at least July 24 in San Diego - we'd likely be hiring a car for the whole time.
We've done a few road trips in North America, including one in California/Nevada where we did a Orange County - Vegas - Death Valley - Yosemite - San Francisco - LA round trip (we've also driven round the Great Lakes & Florida). Ideally we'd like to explore places we've not been before, so I was thinking something along the lines of Palm Springs, Grand Canyon, Phoenix, possibly some of Texas, maybe as far as New Orleans. Another option might be going up (or down) the West Coast to Seattle, even if this would repeat some of our previous trip - and I know there are a lot of posts on here that cover that trip already. So I'm interested to see if anyone thinks there are options other than up the West Coast with plenty of things to see/do. We don't really want to go into Mexico, as I think this would be hassle with the hire car / border crossings etc.
The kind of things we like are theme parks, beautiful scenery (although we aren't too keen on long hikes in the hot weather or strenuous outdoorsy activities), interesting cities and good food (one of us is vegetarian). We don't drink every night but we'd quite like to go to a cocktail bar or two along the way too.
We haven't yet decided where we would be flying in or out of in the States, so we can be flexible (although the cheaper the flights from Manchester UK the better!).
Thanks in advance - any ideas much appreciated!