A coworker here is a certified auto mechanic. I forwarded him this, and he laughed his ass off. He said that even the new GM cars, which he works plenty on, use mostly mechanical turn signals. That these “speakers” and “noise cancellation” systems wouldn’t work if you simply switched out car stereos, and people do that on a very regular basis in GM vehicles because it’s so easy to switch them out. Even changing the speakers in the car (also commonly done) would upset the balance and would require some reprogramming, which isn’t done by your standard “radio shop”, and yet, there are zero reports of people thinking their cars are broken after getting a new speaker set and radio put in.
He told me that I need to stop being so gullible and reading sites that fall for easily verifiable bunk.
