Hi there, I'm a newbie Tesla owner and SO excited! I'm looking at all the accessories online, and the Nema Gen 2 adapters seem to make sense (charge your car really quickly with the mobile charger that comes with the car when you are on the road and don't have access to a supercharger or your wall charger). I like the idea of having a "Plan B." But, I know that at least one adapter comes with your mobile charger, so I can plug it into my outlet at home already. What's the benefit of buying the Nema Adapter bundle vs. the one that came with the car?