Gas is a consumable product. A motorcycle is a durable good with a resale value. The math was simple. I drove an F150 at the time. I got around 18 MPG. Gas went up to $4.00 per gallon. I purchased my bike for $1800. I commuted 3000 miles on it at around 65 miles per gallon. I saved $482 in gas. Then I sold my bike for $1800. So I saved $482. If you want to make the case that I used that $1800 towards a new bike, then I would argue the benefits of having a durable, sellable item while at the same time conserving energy, reducing demand, and fucking the goberment out of gas-tax money. All the while, I've picked up a great new passion which allows me to cap my work day on both ends with a smile. Ok, and I had to sell my wife on the gas thing in order to get permission.