Joined: Jul 2010
Posts: 814
Likes: 0
From: Fairfax, VA commuting to Washington DC
Bikes: 2010 Kona Dew Drop (the daily driver),'07 Specialized Roubaix (the sports car), '99 ish Kona NuNu MTB (the SUV), Schwinn High Plains (circa 1992?) (the beater)
Bikes have some associated per KM costs, too (tires, chains, cassettes, etc...) but clearly much lower. Perhaps if you willingly discount your savings by 10-15% (my SWAG) she'll buy into your math?
I justified my ride based on parking savings alone ($4.50/ day, 5 days a week adds up fast).