I get motion sickness when in a car. I don't get motion sickness no matter how ridiculous my golf cart is tumbling because my brother slammed me with his bulldozer on the NASCAR track. I also don't get motion sickness in those arcade machines which shift about to simulate as if you were actually turning.
I'm the kind of gamer who leans out of the way when dodging attacks, or flinches and even cries "Ow!" when taking a hit. But even if I turn my arms in the same fashion as driving a car, the feeling is different than in a car because there is a literal disconnect between my actions and what is playing out on the screen. Using a steering wheel in a game still feels like I'm giving input to the game; using a steering wheel in real life feels like I'm actually moving the car.
The interface is going to be similar, but the overall atmosphere and feeling is different. In a racing game, even if I'm using a pedal to operate gas and brakes in a similar fashion as with my car, I'm not actually moving in my seat. My viewing field doesn't actually change as I move around, and 75% of my environment remains identical. If I'm playing a third-person-view, then there's also a difference between how I connect the motions I am doing with what I am seeing. As well, damage sustained by my vehicle for failure to perform a stunt do not cause physical harm or any loss of real money.
When you're in a car, it's a lot different. The car hits a bump, you move in your chair. You brake and you shift a bit and have to fix your seatbelt and rearview mirror. The wheel and pedals are attached to one giant chassis and you have restriction in your movements. The ambience, visual and auditory, of the environment changes around you instead of staying static. When you turn the wheel, your actual car is moving. And the background music playing is from a fighting game instead of a racing game.
This disconnect is what largely helps in stopping you from pulling stupid stunts in real life. The very start of the motions in real life will feel different enough from the motions you use in-game that the stunt stops before you can really start it.