Comment by tsomctl

Unlike their cars, if they want to be successful they will need to release factory service manuals and sell parts to repair them. It's not going to be acceptable to send it to some far away service center to be repaired, at least for small outfits that heavily use all their equipment. When a critical piece of equipment is down, the mechanic is going to be working through the night hacking it together, possibly waiting on parts that are being overnighted. Diesel mechanics tend to be ridiculously intelligent and very resourceful.