Originally Posted by I-Like-To-Bike

We've discussed this before and Mr. Money's argument that the "Federal Allowance for driving" (actually the IRS deduction for business use of a vehicle) represents the variable cost of driving each additional mile for personal use was flawed in 2011 and remains just as inaccurate, if not more so today because it (like the widely publicized AAA cost per mile rates) is based on not only the variable costs of mileage (fuel, tires, wear and tear replacement of parts and some maintenance), but much more so on the fixed costs of ownership such as insurance, loan interest, registration and depreciation with the expectation of frequent replacement (every 5 years for the AAA model) with a new vehicle. What is the standard mileage deduction
The reduction in vehicle maintenance costs or for replacement frequency for someone who reduces its use by 2000 miles/year by commuting and shopping with some other method like the OP's example is almost insignificant, and there would be little or no reduction in the fixed ownership costs as long as the commuter still owns the vehicle.

The OP's calculations for actual $ savings considering reduction in fuel, parking and toll expenses for commuting by bicycle instead of car provide a much more accurate portrayal of the potential cost savings realized by bicycle commuting than Mr. Money's misleading version.