@claudefranklin,
Owning a dump truck can allow for a passive income and you don't even have to do the work. All you need is to own a dump truck. Apart from using it to render a service, one can also get a job as a truck driver or lease it out to others.
Dump truck drivers can make up to $44,000 annually. Of course, this varies when considering factors such as experience, driving distances or how often one leases out the truck, but it could add up to a good amount of money.