Ar car navigation, but not general navigation. To say the straight white dot is to make a projection instrument in the car, so that map navigation information, driving information, etc. are projected on the windshield of the car, and are integrated with the road ahead. That is to say, you can drive without using a mobile phone. You only need to look directly at the information on the windshield in front of you to understand all the information about the car. For example, map speed and other relevant driving safety information<br>
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