I had convex mirrors on my other car and they were great. Really helps eliminate blind spots. I could see the side of my vehicle and two lanes on the left.
Shortly video on the Compustar which is a lot simpler than the last video I found on another system.
This system you leave the car running and apply parking brake, car in neutral, press a button on the remote key fob and exit vehicle.
Looking online compustar remote start is compatible with the 2023 Civic. I'm not sure if the T-harness is available yet, no way I'm hacking up a brand-new car harness.