The whole report does point out that a lot of gas stations cycle through new gas quite often, so the gas dont stay there long enough to "cool" down to underground (fairly constant) temperature. It also points out that regulation requires better storage tank and thus better insulator, so again, the gas doesnt cool quite as fast. So if the temprature of the gas from the trucks are hotter than 60deg, then it is still higher than normal when you pump it, on average.

For most of us, the difference is prob in the noise because the cost is distributed over millions of pockets, but the gas company gets to add all that and see it in their bottom line. This gain is real (and not insignificant) for them, as noted in the article that they implemented all type of temperature compensation in "cold" Canada, and in their vendors, but vehemently fight against implementation when they are the vendor. Seems like double standard in their favor to me.