Not discounting you in anyway here, but what about Fangio's 1954 Formula one fetching 19.6 million pounds?
Check the link here, although I am not sure it is the car that actually has the value here. I think it is more the history that adds the value to this car. Interesting that a car he only raced and won three GPs in 1954 after changing teams from Maserati would go for this much. This is confirmed with the chassis number '00006/54'. Amazing to think Mercedes must have hit such a high point in racing history in 1954, just to go into 1955 not knowing how racing would forever be changed...
With the commission charge, the total price was 20,896,800.00 pounds. THat equates out to 33,580,681.43 Dollars. I wonder if the buyer would have a meeting with me over meer plans for a vacation resort town for less then 1/3 the cost of that car... we can dream right?
On the other side of this question, I think each and everyone of us can answer it differently. Nothing will ever be worth a certain 1993 Miata to me.