Now that Blue has been part of the family for a year now, I thought it would be a good time to take a reckoning of what he's cost us, and compare that to the cost of owning Nine of Cups. Last week in Part 1, I tallied all the fixed costs – those dollars that don't change much whether Blue is sitting in the driveway or carrying us across the country. This week, I'll total up the operating expenses. These are the costs like fuel and maintenance that do vary more or less directly with the amount of driving we do.