Flight Instructor taking off from a non-towered airport reported a rejected takeoff due to a vehicle approaching the runway.

Narrative

A pickup truck entered the runway environment of Runway XX at the taxiway 1 intersection from the north while my student and I were on the takeoff roll from the north end of Runway XX. We had made all the proper radio calls and were accelerating towards rotation speed. I noticed the the vehicle approaching the intersection from the north (our left). When it showed no signs of slowing as it approached the runway hold short lines; I called for the abort takeoff (reject) and pulled throttle to idle and applied maximum brakes. While we were able to avoid collision and maintain control of the aircraft on the runway; we were forced to skid and veer to the our right (while staying on the concrete).The vehicle skidded and veered to it's left and stopped short of the runway. We then taxied down the runway and exited at the next intersection.My student was clearly shaken from this incident; but I turned it into a lesson on abort procedures and instances that you may encounter beyond your own aircraft.The vehicle was not on CTAF nor monitoring calls. I'm told this is not the first time that something like this has happened with this vehicle.