Carsick
Today on the way to work, I noticed something I never really paid attention to. I was nibbling on a breakfast sandwich driving my brick shaped large pickup truck to work. Normally I take surface streets along the mississippi to work but today was the freeway. As I speeded up my ears popped. I thought, whoa hot coffee, thinking the coffee’s heat pressurized my head. Then I realized that the speed created a vacuum inside the truck. I’ve seen it in wind tunnels but never noticed it. This might explain carsickness. As the driver speeds up and slows down the pressure in the car goes up and down, depending on the aerodynamics of the car. So a driver who leapfrogs others may be treating the passengers to the equivalent to a hilly ride even on the prairie.