I drove from North Carolina to Ohio yesterday (400 mi total trip) and after the 3rd charge, the battery temp gauge was in the unhappy range (one segment of red was showing), although I did not get any warnings on the dash about it. What happens when it gets "too hot"? I am assuming Nissan has tested this and it will turn off before Very Bad Things happen, but has anyone experienced/heard stories about the car saying it's going to turn off due to overheating?