I don't think anyone (including AutoMall

)has gone this far with the calculations you've completed.
Taking into account the fact that AutoMall is a new program, and with the recent glitch they had with HHonors which resulted in drastic cut backs on points earning opportunities, my guess is the 80 points per purchase is the Maximum total points that will be awarded per purchase.
Please share your experience with us if you do decide to try it out.
[This message has been edited by mitquack (edited 05-01-2002).]