Tell me about it. That's what I do for a living. The cost of fuel is driving many owner operators out of business. When you make 1.25 a mile and have to put 700 dollars of fuel in the truck to make the trip, your profit margin quickly goes down. That doesn't include insurance, maintenance, cost of permits and such.
My company told me their break even rate is about 2.20 a mile. Anything less and they are running the truck for a loss.
And other expenses, like Tuesday I was cruising along and a big fucking wheel and tire is sitting in the middle of the lane. I tried to swerve to avoid it and hit it with both my front passenger tire, and the front drive tire on the passenger side. Front tire was fine, but it blew the drive tire and bent the rim. $1175 roadside repair that took 3.5 hours. Caused me to be late to my next stop. There went the profit from this trip and the next 3.