Oh shit, rubber vs. electricity...that's so lame when I think about it. Here we have a villain with godly power, and Luffy is just gonna be immune to his attacks. Maybe the end of this arc is gonna be anticlimatic.

Although, even if he's immune to lightning attacks, it's still gonna be tough to beat Enel if you still can't hit him. If he just turns into electricity whenever you go to punch him.