I suppose Boeing or Airbus could build you a tractor with airliner style reliability. Obviously it would cost you 100k per HP and you'd have to have a team of specialist technicians carry out a full inspection before every use. Plus you operators would have to undergo months of training and regular refresher sessions. I'm not really sure the money is in farming at the minute to pay for all that........Recon now tractors are getting on for £1000 per horsepower the unreliability of a lot of tractors needs to be seriously addressed . Farmers spending £250 k + plus for prime tractors that is an obseen amount of money to spend on a tractor and then they still breakdown i know extended warranties are available for a price but come on for that sort of money you would expect more reliable products . If tractor manufactures made aeroplanes no one would fly . Now that is a thought and would help sort global warming .Fly in a john deere plane or a fendt or even a zetor plane ? No thanks i would trust any of them ill stay put thanks .