If most car were using nuclear power, this does not that there were not something running in gas around. Great War was about oil, so oil was useful for something.
Some PA was requiring batteries by lore. "Permanent" fusion engines could expire after 200+ years and had to be replaced with less practical options.
Not that different from ghouls that were in the first game.
True, and most annoying. But it happens in all new Fallouts.
http://fallout.wikia.com/wiki/ZAX_1.2 had AI in Fallout 1
Fallout 2 has AI running a Vault.
Well withinh Fallout scientist modus operandi.
Sounds retarded. Haven't seen this.