I get motion sickness alot. I always have to drive, because when riding passenger (especially in the backseat) I can get seriously car sick. Even small car rides can get my really sick (as in 15 min car rides), and it's not too uncommon for me to throw up. But I'm not asking about this, that is something genetic I'm sure I have no control over, and I've dealt with this my whole life. See, last night I went to a show, and afterwards we went to a coffeeshop. This coffee shop is in the middle of downtown, so we're in for a good 20-30 minute car ride. As feared, I started getting carsick and after a bit I was ready to unload. But then, my body just shot numb. From my chest up, I couldn't feel anything. My hands started shaking violenty, which I didn't even notice til a friend pointed it out. My legs were fine, though I felt like I was going to collapse at any moment. The numbness went away in about 15 minutes. But I was seriously freaked out. I couldn't feel a thing. Can someone explain what happened?