Next June or July I'll being heading out for 4 - 5 weeks xcountry and back. Is this a decent amount of time to see some sights (mostly parks and perhaps some cities). I needn't stop everywhere, I'm more interested in just getting out on the road. I was thinking of doing a loop--up through the North, down the Pacific Coast then back through the South. I'm constantly driving, so driving a lot will not be a problem (I'll have two friends who will drive as well). Thanks in advance! By the way, this site is great!