The pilot commenced the take-off run while the vehicle was being driven along the left side of the strip. He stated that just after becoming airborne, he had been distracted by some movement to his left. As he looked to the front again, the left main wheel of the aircraft struck a drum on the vehicle and then the vehicle cabin. The aircraft was subsequently landed at the pilot's base strip. It was calculated that the aircraft should have become airborne after a ground roll of about 170 metres. This should have allowed it to be well clear of the vehicle, which at impact was some 640 metres along the strip. The pilot employed an incorrect take-off technique after lift-off which reduced the climb performance of the aircraft.
