I have found that to be true
I have found that to be true as well. After experimenting with it, quickly accelerating to your cruising speed does lead to better gas mileage. I also do a lot of coasting and try to use my brakes as little as possible, which has the added bonus of saving wear and tear on the brakes, as well as being safer. (Who's in a hurry to stop at a red light?) Right now after 61,000 miles my Prius has a lifetime average of 61.3 MPG on a car that was marketed to only get 57 in the city, driving in the hot Florida Summers no less with the A/C on.