Hi, Mr: scotty,
Once again I met a another problem. Today I had a long trip and after this (after 3hours) I tried to start my car. But it didn't start in "P" , then I put the car in to nutral and try to start, so it did start 1st time. This same problem i met 10 month ago and it didn't appear freaquently. This time i met the same problem. Is this big problem. Please give me you'r opinion.

Sounds like either a weak starter or a failing transmission range switch (also called safety/neutral switch).