— Software failure resulted in loss of steering control, speed control, and brakes became unavailable. I was on highway car was at 65 mph and then I got a bunch of error messages mentioned below- 1) Steering assist not available 2) AWD is disabled 3) Headlamps not available 4)Service brake assist And then I was not able to brake the car, and steering became highly unresponsive. I took my foot of gas and let the car roll for 1 mile before stopping safely on shoulder, from where I called Cadillac for support (they towed the car back), since error didn’t resolve after stopping or rebooting the car. I took screenshot of these errors after stopping and attached them in this email. — Yes it put safety of me, my passenger, and other vehicles at risk, loss speed and steering control you have cause me to hit any other car. — Yes problem is reported to manufacturer, car is in service. — Vehicle is with Service, since no one got hurt, we didn’t involve police. — No prior message or warnings we recieved, all errors come as soon as the issues appear.