Feel free to tell me what you think they represent . Secondly, the two unlabeled pieces of plastic have the same button affordances as the top two, but they do nothing. If they're not buttons, they shouldn't look like buttons. The fake buttons could throw users off, cause them to be distracted, and potentially cause deadly accidents. Lastly, the dial beneath the four buttons is not labeled, and it's horizontal.
Horizontal dials are more difficult to use, especially if the user has no idea what the dial does.
A logical explanation for the mistakes Drivers should be familiar with their cars before they drive them. Drivers have other things to do with their lives, and they should be encouraged to quickly become safer, more effective drivers, not unsafe and confused drivers.