Look at all other anime's like naruto. the Time lines are odd. you cant judge them by our standerds of existance since they have tv's and video cams, why are there no PDA's instead of Scrolls. why dont they have cell phones. they have walkie talkies. this can go on and on. but why bother. odds are we will see a moter cycle or something somewhere down the line but that would be the max i would expect.