The fax protocol includes a strong "read receipt" type mechanism that the machines can't ignore. "Did you get the last page?" "Yes, no bad lines."
Legally, this is interesting because it doesn't exist in email. You had the machines agree that the complete document was sent and was received. You will certainly find that it other transfer protocols, but not email, where the machines don't talk to each other directly.
Replacing an oxygen sensor – $249 - Teslas don't have these
Replacing a catalytic converter – $1,153 - Teslas don't have these
Replacing ignition coil(s) and spark plug(s) – $390 - Teslas don't have these
Tightening or replacing a fuel cap – $15 - Teslas have a charging port cover, and it breaks
Thermostat replacement – $210 - Teslas don't have these (in engines)
Replacing ignition coil(s) – $236 - Teslas don't have these
Mass air flow sensor replacement – $382 - Teslas don't have these
Replacing spark plug wire(s) and spark plug(s) – $331 - Teslas don't have these
Replacing evaporative emissions (EVAP) purge control valve – $168 - Teslas don't have these
Replacing evaporate emissions (EVAP) purging solenoid – $184 - Teslas don't have these