Here you go, most of the hard work was already done for you.
http://www.gtrlife.com/forums/topic/84727-my-cost-per-mile-comparison-of-my-gtr-and-my-daily-driver/It costs roughly $0.47/mile to drive a GTR if you are doing the majority of the service work yourself, using aftermarket parts, and not paying the dealer for the scheduled services. From what I've seen it would easily be $0.55-0.60/mile if the dealer did all the servicing.
47 cents per mile for 100,000 miles is $47,000. That is fuel, tires, normal maintenance, etc. It does not include broken parts or unscheduled maintenance. It also figures an 18mpg average which is a very generous rating. It doesn't take into account taxes or insurance. For you that would be 160,000km and $49,000 CAD. If you drove a conservative 16,000km a year that would work out to $5k a year to keep fuel, tires, brakes, and fluids in check.
Figure $0.20/mi depreciation too. In comparison, his miata beater is costing him 15 cents a mile.