Just entered the interstate and was 2 miles from home when the car started shaking cause the car to make a sudden hard right across multiple lanes of traffic going down an embankment and hitting trees. Witness who saw the accident while traveling behind the car saw smoke coming from driver rear tire, then car began to shake and car abruptly went to the right and off the road. Highway patrol stated based on witness and driver accounts, the driver rear tire failed. The collision center states the interior portion of the driver read tire separated and failed. The entire tire separated clean.