And it was fun to look at a Google map in Russian. That's a first for me! :)

Welcome to the RTA forums.

1. I'm looking for good and cheap car rental in San Francisco for one-way trip. Could you recommend me it?
You will need to stick with any of the major car rental agencies because of it being a one-way trip. You can go directly to the websites of companies like Hertz, Avis, Nationwide, National, Budget, etc. or you can go to someplace like Expedia, Travelocity, Priceline, etc. We have no magic tricks to find any better deals than what you'll find there.

2. I'm worry about New Orleans, what do you think is it good idea drive there after hurricane?
Gustav turned into a tropical storm and did not do much damage to New Orleans. Things should be fine by the time you arrive as long as more storms don't come in. I wouldn't change my plans because of Gustav.

3. We are interesting in many things, but in first we are interested in: beautiful places, old and historic places, traditional cousin, traditional music and culture. Our friends are architectors - they are interested in modern arts and architecture. Could you give us advice which places is better for us? What we need to see? Were good restaurants, and where we can find traditional musicians, for example cajuns or native americans (we are plan to visit navaho is it interesting?)?
Your route is going to take you through many areas with these types of things. The trip to the Navajo reservation should be fantastic. You will see changing architecture throughout this trip as architectural styles tend to be regional, to an extent. The best way to find traditional cuisine, music, etc. is to ask around in the local areas for their recommendations. You can generally get this help from your hotel clerk and local visitor centers.

I hope somebody with the same interests and familiarity with the areas you're traveling through will pop in with more specific recommendations. You might want to make use of the search feature here (see green bar above) to find posts that discuss your interests.

4 I'm worry about time. We plan do this trip in two weeks is it real? If it impossible how can we make our trip shorter?
I don't think you need to shorten your trip. You should be able to do this in 2 weeks, just fine. You'll just want to pace yourself.

Keep asking questions as you're planning so we can help you plan a fantastic roadtrip! Happy planning.