Carrier/rack problems of the 2018 Buick Encore

I was told to reach out to this site because of the issues I am having with my vehicle. I have been in a the process of trying to get my 2018 Buick bought back by gm. In June 2019 the Buick died on the railroad tracks in archie, mo then 30-40 seconds later it started back up on it's own without my assistance. I called on-star right away and asked if a code was thrown. No code was thrown. I drove it to the dealership. They found that the battery which was not even a year old blew up inside itself. I bought the Buick 8. 24. 2018. They dealership replaced the battery. In July of 2019 I was driving on 1-70 right before the 291 exit and the car joulted (the only time it has ever done that) it died again 30-40 seconds the car came back on. Once again I called on-star, no codes popped up. I called the dealership to let them know I was bringing it back because of the issue. I got onto 291 south right before exit 214 the Buick died again 30-40 seconds the car started back up. I took it straight to the dealership. They had the Buick in the shop for a week, they could not duplicate what was happening. They told me that it has to do several times and to bring it back if it does it a couple more times. It did again after July 2019 when I was driving it around olathe in town. I did not report this time. In may 2020 I had just got onto 435 from wornall @1715 before I could hit roe the car died on the interstate and started back up 30-40 seconds. This time I called gm itself, if it was not for lock down. I would have died. Gm has denied my buy back. The dealership keeps telling me there are no codes being thrown nothing we can do. I could have been injured or killed. When the Buick does this I have no control over the steering wheel, pedals, or electronics in the car. I can not warn anyone that is behind me that this has happened. I am scared to even get in the Buick. .