i'm not 100% on this car in particular as it doesn't mention in the article, but you can run a mechanical diesel engine with absolutely nothing electrical attached to it as long as it doesn't stall (in which case, you could probably bump-start it if it's hot enough and it'd start anyway). At a guess the engine in question is a 1HZ which has mechanical fuel injection.. so yes you would be OK without the above
Agreed. Furthermore, EMP events are unrealistic and on the same level as a global nuclear winter. Supply chain logistics problems, failures, and disruptions are much more real of a threat, and this is where privately owned Toyota vehicles shine.