The cost of gazoline is increasing exponentially. A few tips to reduce your cost. "When vehicles travel 80 km/h or higher they increase their fuel consumption. For example, a vehicles uses about 20 percent more fuel to travel at 120 km/h than to travel at 100 km/h. Slow down for safer and more fuel-efficient driving."
https://www.carfax.ca/resource-centre/articles/how-to-get-the-most-out-of-your-fuel