I saw this link a few days ago. It seems to me that the method really doesn't capture the difference in rural areas vs more urban areas. For instance, every day, this time of the year, I travel five miles each way to feed my horses. At no time am I within close contact with anyone. If I need to go to town to get groceries, the drive did not get shorter due to the virus. It does not factor in that, that the shopping is done at times to minimize the number of other shoppers in the small town grocery store.
We are definitely sheltering in place, but any chore involves a drive of some distance.