75 Speed Limit - How Fast

cummins2014 wrote:

Lynnmor wrote:
Anyone that says they get their best mileage at 72 MPH is not in touch with reality. Since aerodynamic drag increases dramatically as speed increases, it is impossible to reverse basic laws of physics. Slow down AND grow up.

75 with a fifth wheel is definitely not in touch with reality , it’s been proven speed kills , that’s reality .

Uh no, speed doesn't kill, otherwise airplanes would be permanently grounded, and trains wouldn't go over 35 mph. It's the sudden deceleration that kills. Run your head into a wall at 35 mph and you'll likely be just as dead as at 105 mph.