So, next summer my friends and I (3-4ppl) are planning to make a 3 week trip to the SW USA. On the schedule: L.A., Vegas, San Fransisco and the National Parks in between. Do you guys have any advice, tips, recommendations? Some questions I already have: - we're planning on renting a car, driving road-trip style, sleeping in motels and such. Do you have an indication of rental costs? motel prices? - maybe any of you can supply us with a roof over our heads in some cities/towns that are on the way? - security: regions we'd better not visit? (gang wars and such ) any advice and tips are welcome! thx!