This matches reports from Tesla users. The cybertruck is specially prone to this sort of design problems.
The Cybertruck went with daisy chained PoE automotive Ethernet variant. The same cables delivering power to subcomponents handle data. Damage/problems in a single component can not only bring down the network but kill power to all the car's subsystems. It means less wiring in the Cybertruck (and lower production expense) at the cost of durability and fail-safety. Someone looked at TokenRing Ethernet and said "yes that is best".