a bike that pay by itself?

I'm planning to buy a Suzuki V-Strom to commute to work. 

Here's the analysis.  

Daily commute in miles: 55 miles. All Highway Miles.

Gas Price: $3.70

                Current Vehicle: Honda Accord 98.                    Future Vehicle: Suzuki V-Strom 

Highway MPG                 25                                                           46

55 miles I will use           2.2 Gallons                                               1.19 Gallons

Cost per day                $8.14                                                         $4.4

Cost per Month             $244.2                                                       $132.0         

Monthly Savings:  $112 per Month.$1344.00 a year.

              Now let's look at cost.

              Suzuki V-Storm 650 MSRP.  7,000.00

              Finance $1000.00 Down. $6000.00 36 payments at 9.00% Interest.

                      $2,000.00 a year + 2,000 x %9 ($180.00) / 12 = $181.00/month

If I substract the money I save monthly ($112) the Payment would be a astounding  $69.00 

a month. But then you add the Insurance and  maintenance  and you 'll end with  $100.00