Woops! May not be fun!

Self-driving cars could be a lot like carnival rides: fun, but they could make you vomit.

According to a new study from the University of Michigan’s Transportation Research Institute, 6 to 12 percent of Americans in self-driving cars will experience moderate to severe motion sickness. Nothing like vomiting all over your expensive new ride!

Ever noticed that you only get carsick when you’re a passenger in a car and not the driver? There’s a reason for that. When what your eyes see doesn’t match up with what the rest of your body is feeling, you can suffer from motion sickness. If you don’t have your eyes on the road — and you won’t need to if you’re in a self-driving car — you’re likely to get sick (usually nauseated). So if you’re working or reading or watching TV while sitting in a car, you’re much more likely to feel ill.