So true! A stiff suspension is so much better for those prone to motion sickness. You go over a bump and you feel a jolt…but then it’s over. Way better than the nauseating “floaty” feeling you constantly experience in cars like your dad’s Cadillac.
The driver can make a big difference too. When drivers find out they have a passenger prone to motion sickness, they often try to drive more carefully and “gently” but this is the exact opposite of what helps. I tell people, "Drive assertively, drive definitively, do not make the car “float.” And please, for the love of all that is holy, park the car in the very first empty slot you get to at the edge of the parking lot! Nothing worse than the unpredictable, floaty, rotational movements of slowly winding up and down the rows looking for a closer spot.