I don’t like that question because a dismissive but valid argument is “to contain the smells after taking a shit”.

It’s truly ironic, but its really a good choice, if you don’t care about repairability and removable battery

Basically I’m saying wrap your car in tinfoil

and don’t ever let diagnostic tools with network access be connected to it. just as well could say never bring it to service, which is not really possible

Because in most cases it isn’t encrypted, when it is it severely reduces functionality, and it doesn’t even use a crypto alg that’s widely approved of by trusted crypto experts?