And while nearly every commercial vehicle has featured sun visors for decades ... if Gentex’s newest ideas wind up in next-generation cars. Andrew Paul is Popular Science’s staff writer ...

Here’s a secret feature you never knew your car had. The sun visor in your car is one of the most basic yet effective features of a car. The design has been relatively unchanged for a century ...

Sarah explains in the video that motorists should pull down their visors when they're defrosting the car in order to streamline the airflow better. To start, a driver should start by blasting the ...