the battery has a 3c charge rate which would mean it needs to be charged at 15A, I think, right. I am basing this off of what I have read off the internet so far
Change "needs to be charged at" with "can be charged up to".
You do not push the throttle pedal to the floor all the time while driving, even when there is a couple of inches clearance left under it.
Its 150 horsepower engine is its maximum power capability; not the typical 20HP it yields in 'normal' driving