I was just thinking of this-

Take your car payment.
Add your monthly gas bill.
And your insurance.
Divide by how many hours you drive per month.

For example:

(211 + 50 +87) / 30 = 11.6

So it costs me $11.60 an hour to own and operate my motorcycle.* Three years and $12,528 later, I will have made my final payment and be the proud owner of a motorcycle that I could probably sell for $2,600. On the plus side my operating costs will be around $2 an hour. In the meantime I could ride twice as much (or half as fast) and my hourly rate plummets.

Just something that's been running through my mind for the last 10 minutes.

*massive over-simplification