Interesting idea. I rarely have passengers; I'd worry my driving would be a little weird for them with me adapting to switching off regen braking.

The braking with one pedal driving is much more immediate. The car doesn’t really coast. Instead, you slowly let off the accelerator and the car drags to a stop. It takes a while to get good at, kind of the same way you have to get good at letting off a clutch in a stick shift. If you let off the accelerator abruptly, you will feel the car braking immediately. You have to let off slowly. Trying to drive the traditional way while this feature is turned on creates the “seasick” lunge.

Sorry if I’m not good at describing it. If you get a chance to test drive an EV that includes this option, try it. I mostly keep this feature turned off on my EV because I don’t really see any improvement in range with having it on.

There’s a video demonstrating it here:

https://www.youtube.com/watch?v=7-mVMEfoIZw

It’s just travel sickness so I don’t know why it doesn’t make sense. Changes in speed or direction can make you feel sick

I get it as a passenger in petrol cars. I start to feel sick if the driver cuts off on the power and then goes back to accelerating too suddenly.

That sounds like it would be worse in an EV with this feature turned on.

I can feel sick due to engine braking and it doesn’t matter whether it’s a manual or an automatic as it happens with both. I leave my auto on the comfort setting and it can still cause sickness. The sport mode is worse and the eco mode wouldn’t cause sickness as it doesn’t have engine braking (I assume that it does the equivalent of dipping the clutch when you let off the accelerator)

As I understand it any unanticipated movement can cause motion sickness. I can’t read in a car otherwise I get sick really quickly. I can get sick in the front passenger seat even if I don’t read.