Originally Posted by g35
^^ I think you're wrong about that. $100 should get to you Portland and back, not Seattle, in a car getting 25 mpg hwy and paying $3.50/gallon.
Seattle is 250km away
Fuel is currently about $1.45/L in Vancouver
Fuel is currently between $4.25 and $4.50/gallon across the line
Averaging those out brings you to $1.33 / L which is about what most people will end up pay taking into account fuel already in the vehicle.
25mpg is about 10L / 100km.
Seattle will therefore take about 50L of fuel, assuming going directly to the airport and no major traffic problems.
I stand corrected. It would be between $66 and $72.
Note that this isn't including mileage costs, incidental costs or parking costs but I didn't say anything about that in my original email, so I'll leave that alone.
Seattle's still not as cheap as people like to think it is.