Absolutely not, by accident, did JCs car land where it was parked on Herron Road.
Please find a photo of the actual Crime Scene. Oh, wait! I have this SS.
Jessica's car was parked parallel to the road, on the knoll, near the burnt Pine tree. Her car was facing the same direction as the photo shows. Her headlights were pointing to the East almost touching the pine tree. Note the fence as it was a tight space between her car and the fence. The passenger seat was near the fence. The gate, where the red emblem is placed, leads to the tree farm as has been mentioned in testimony.
This may help envision how the fire trucks were parked, according to testimony. Note the smaller trees as those would be "the woods" where Jessica emerged.