That navigator probably weighs north of 6000 lbs with 4 people in it. 6000 lbs moving at 20mph is a lot of energy. And that’s not a tanker truck loaded with water, it’s a “smaller” truck with a single axle in the back from what I can see so it’s not going to be one of the heavier trucks. Weighs maybe 20-25,000 lbs?…