1. A backplane assembly, comprising: a plurality of blade processors in a vehicle, wherein: a first set of blade processors is installed prior to vehicle sale and not modifiable and/or replaceable by the vehicle owner; and a second set of blade processors is installable after vehicle sale and is modifiable and/or replaceable by the vehicle owner, each blade processor comprising a microprocessor, a memory, and a network interface and each of the blade processors performing a different set of functions.