 This figure does not include people who own cars, but do not have enough money to repair the automobiles.As of that year, while the average income of all residents of the county was $41,000, the average income of households without cars was $13,000.In Harris County, the average one way commute for a person using an automobile was 25 minutes, while the average commute for a person not using an automobile was 44 minutes, a 76% longer duration than the figure for commuters with cars.