Unsure which individual or multiple system components failing. All occurred within 5 miles of home. Driving to destination noted that vehicle was acting or responding weird but did not show signs of any failure reported to daughter while speaking to her on the hands free system in vehicle but did not really pay much attention to what was happening because it did not affect the driving at that time. Approx. 1hr later left destination to head home and vehicle decided it had a mind of its own and would not respond to most physical commands ie, braking, slowing down, etc. and was actually increasing in speed. attempted to change the vehicle shifter to park, push the engine on / off button, depress brakes but no response to any of the commands. At this point so not to hurt anyone else drove into a fenced field and back out eventually hitting a tree head on. Prior to this occurring there was reporting to dealership of hard shifting but nothing else and dealership wrote off to the adaptive learning of the transmission. Vehicle was inspected by the Lincoln rep with assistance from the dealership / svc dept. and was deemed nothing was found to be wrong with car per the data box of vehicle, BUT the dealership noted in the finding in emails that the black box was only scanned for the day the Lincoln rep was at vehicle NOT the day the vehicle was in accident. as noted above the vehicle did appear o not be responding correctly driving the destination that day but it was minor not someth