A co. in NE.IL has been doing this for years Half the Drivers,trucks ,Dump time,maintenance, Fuel & Insurance. 1 truck and driver can work up to 3 maybe 4 different jobs or crews. Bring out a chip box and chipper come back later and pick up a full box of chips,drop an empty. load it with logs. Pick it up later and go dump. 12 to 17 Yards is the same on the ground or on a truck. Why pay for a truck that sits most. Probably costs more to get started 2 trucks & 4 or 6 Boxs, after that just buy new boxs as needed. open top for logs topped ones for chipes