I have a buddy who works in the pipeline area of fuel transport. We had this discussion locally when gas was $5/gal. He did indicate that for his job, they do check fuel temp when pumping and transporting to ensure a specific volume of fuel. But they were transporting thousands of gallons opposed to the 4 gallons on our bikes or the 20-50 on our cars.
Difference? Yes. Enough to change your life? up to you, I'd say no.
I never meant to suggest that volume made a difference in any situation other than in a gp bike where fuel capacity is strictly monitored.
I still think it makes a difference in their lives.