Recreational Vehicle Lpg Tank Valve/gauge problems of the 2019 Ford Escape

While operating the vehicle at approximately 70mph on the interstate I noticed that all instrument panel lighting, gauges, and display screens went out. The gauge needles returned to their �home� positions. There was an error message on the main touch screen that said: network communication failure. Worried, I took the next available exit and found a parking lot to investigate. I immediately tried to shut the engine off, figuring that if I completely shut the car down the system would somehow correct itself after a �reboot� of the the pcm and bcm. I quickly realized that I was in trouble, the engine would not shut off. The vehicle is equipped with a �Smart keyless start system� but no matter how many times I would try pushing the button. Even though the car operated properly after the symptoms commenced I find it doubtful that all of the car's safety features would have operated as designed, if needed. If I would have gotten into in accident at the time the car was experiencing these problems would the safety restraint system work properly and deploy the applicable air bags??? would the �auto fuel pump shutdown� do its job if needed??? also, what if the vehicle caught fire at this time and I could not shut off the car??? not safe!!!.