Here is some more experience with the Seattle Endurance. Remember that my recollection of my previous experience has been. I can't remember it all because I was not expecting any headaches:
Car used: Mercedes Touring Car
Prize: Panoz
Cars used: F1, 787B, R390 (about 4 races)
Prize: Tommy Kaira
Cars used: Nismo LM Road Car, Celica Rally Car, Imprezza LM Car, Calibra Touring Car
Prize: Skyline
Last night's experience (3 attempts)
Car used: Polyphony 001 (Red)
Driving style: Take it Easy and try not to hit anything (more for variety than a theory)
Pit Strategy: every 7 laps
Margin: 8 laps
Prize Car: Tommy Kaira
Car used: Polyphony 001 (Red)
Driving style: As quick as I can go and everything moving or stationary get out of my way
Pit Strategy: every 7 laps
Margin: 10 laps
Prize Car: Tommy Kaira
Car used: Polyphony 001 (Red)
Driving style: Who cares as long as I win
Pit Strategy: whenever I feel like it
Margin: didn't check but probably 8 laps
Prize Car: Tommy Kaira
I will keep going as long as my sanity prevails and see if my random luck changes. Seriously I will keep going and see what the evidence suggests.
I will setup a new thread just with my results and will add a link here.