Charged and plugged in to Car Play iPhone died while driving and Siri was giving me directions home.

My phone had plenty of charge and was plugged into car play; I have auto update set up and phone was plugged in all night. I asked Siri to direct me home and was following directions. It stopped working about the fourth turn. Next red light I force restarted it. Then I got a picture of two phones coming together and going apart back and forth. When I got home, my iPad told me my phone needed to be reset and updated to 18.5. There is no way it wasn’t up to date before this glitch. I had an important business call I was supposed to be making at the time the two phones started coming together. The advisor at 1-800-MYAPPLE told me that maybe someone in a passing car had a phone that communicated to mine and set up this glitch. That doesn’t sound reasonable to me. At the time this happened I was 12 miles from my iPad. My watch was working fine. This is unacceptable to me.