Good to know....

There is a LOT more to a seat foam than having it flatten out over time or leaving a cheek impression in it. I've ridden motorcycles for a long time; dirt, street, 'adventure' ... and a good seat can be the difference between a PITA in 20 minutes or riding 4-500 miles a day (or maybe 50 in the dirt) and still being able to walk.

True. A motorcycle seat is considerably more a part of an interactive driver/machine function than is a passenger car seat. Still, there is a lot more to it than simply being a spot to park your buttocks.
there is truth to this, with a car seat say a bucket seat and driving long distance a comfortable posture is key. i remember old jalopies I grew up with where you "leaned" while sitting behind the wheel because of worn out seat issues. I'm older now proper posture is a necessity