That is a very bad take. What you are seeing are only those trucks that survived--because the trucks that didn't survive are too badly mangled to identify as trucks. If you look at some of the later pictures in this photo deck (https://fox2now.com/news/illinois/photos-tornado-destroys-ed...), you can make out several trucks whose occupants would be dead. At least one truck appears to be sheared cleanly in two. The trucks that survived appear to have done so largely because they were out of the main debris field.