Incident Overview
A pilot operating at night at an unfamiliar airport reported receiving progressive taxi instructions to the active runway. The airplane was still on the taxiway when an air traffic controller cleared the pilot for immediate takeoff and advised of traffic on a two-mile final.
Sequence of Events
The pilot stated that the pilot-rated passenger was urging him to hurry, and he applied full throttle. The pilot reported feeling that something was not right, stating, "...but I couldn't put my finger on it." When the pilot realized the airplane was still on the taxiway and not the runway, he shut down the engine. The airplane then ran off the approach end of the runway and came to rest in a ditch.
Outcome
The airplane came to rest in a ditch after departing the runway environment. No further details about damage or injuries were provided in the source.