Speeding in your car to work, to pick up your children from school, or go from one errand to the next not only wastes money in gas and sends harmful emissions into the air, it barely saves you time, new research says.It is something to think about as gas prices stay elevated throughout the summer months and add pain to day-to-day driving and seasonal road tripping.Instead, abiding by posted speed limits can save U.S. drivers millions of dollars at the gas pump and eliminate millions of gallons of fuel each day, according to a study published Thursday in the Nature journal Communications Sustainability. That is fuel that, when burned, emits planet-warming gases into the atmosphere. To top it all off, changing driving habits wouldn’t even add a full minute to a driver’s commute.University of Minnesota researchers analyzed 120 million vehicle trips across the United States from four Wednesdays in 2021 using driving data on national road networks, speed limits and U.S. Geological Survey elevation data. The analysis included roads with speed limits of 45 mph (72 kph) and higher.More than 43% of the studied trips included at least one instance of speeding, and drivers spent nearly 12% of their driving time going faster than the speed limit.