general problems of the 2014 Hyundai Genesis

I got into an accident in October 2019 where I was rear ended and carried into another vehicle but my air bags did not deploy although my headrests did deploy but prior to the accident my car would fishtail when making turns when the roads were wet and while driving on the highway trying to merge into traffic my car loses acceleration all on its own and then gradually picks up speed again I've almost got hit several times because of this. Also my car has shut off on its own in traffic with heavy traffic it was very scary we didn't know what was happening to the car and this has happened twice. Now my car is showing a lot of hard code errors from the abs/esc system to power seat modules they say it's something wrong with the computer system itself because it doesn't notify you of any issues on the dashboard at all. And today I took it to a mechanic shop and multiple b codes showed up which didn't make any sense even cam sensor codes and I just got this car in March 2019.

Car began to accelerate after starting and put into gear. I didn't touch the accelerator pedal, nor was the floor mat touching the pedal. I had to put the car in neutral and shut it off. After shutting off and restarting, it did this 3 more times. It accelerated while still in park, almost to 3000 rpm before I shut it off. Fourth time, it restarted without any problems.

The vehicle accelerate on it on when is in park gear. I turn off the engine to stop the acceleration of rpm, I turn off engine when I saw it goes up to 6000 rpm, which I believe it could continue to raise. The vehicle also accelerate on it on when it in drive gear ( local and highway ), I safely pull over, put in park gear ( still accelerate ) and turn off engine. Overall it happen once a month since 2017, but 2 weeks ago ( 08/07/2017-08/13/2017) it happen twice. I bring it in dealership and they cannot find anything wrong with it using computerize test.

On July 4 2017 at approximately 7:30am et I was waiting to park and had my foot on the brake when suddenly the engine revved and accelerated, moving the car forward and crashing into the passenger rear bumper of a parked Ford f-150. I pressed even harder on the brakes and the car continued to move forward as if it was sliding on ice; it created tire skid marks from my front tires - supporting that the brakes were engaged. I attempted to put the car in neutral and the engine continued to rev faster. The nose of my car was lowered due to my pressing on the brakes and as a result the front end of my car went under the bumper of the truck and began lifting the truck until it finally came to a stop. The conditions were sunny and the asphalt was dry. On Friday June 23 at approximately 2:00pm et I was backing down my driveway, which has a slight vertical decline, so the brakes were engaged. The car's engine suddenly revved and accelerated down the driveway into the street; once again, it felt as if I was sliding. The brakes were fully engaged. I was able to place the transmission in neutral and the car came to a stop. I placed the car in park and turned off the engine and restarted without any issue. Regarding the June 23 incident, the car was not driven for approximately 6-8 days. Relating to the incident on July 4; the last time the car was driven was on June 23. From June 23 through July 4 the car was parked at the airport. The only parallel that I can draw between these two instances is that the engine rev and acceleration occurred after the car had not been driven for a period of time. My research indicates this happened to many other drivers; however, the manufacturer claims there is no issue with the car and that it is human error; avoiding accountability. I will take a polygraph to prove this was not human error, rather a mechanical failure.