I saw the same video you did, and came to the conclusion you did, but I eventually changed my mind. I decided that the video was probably taken immediately after Fields had run into Heather Heyer. He backed up, trying to get out of the area, and the crowd attacked his car, smashing his rear windshield. That video showed someone being at least somewhat squashed between Fields's car and a Toyota truck, but that person was apparently not Heyer, and apparently did not die.
While I had little trust in the MSM's reporting on Charlottesville, after reviewing the info presented online, I ended up deciding that Fields was probably guilty as charged. Not certainly, just probably.
So, there’s no video of him hitting Heyer?