 from your rental car. You don't want to be stuck there without coolant because you are going to have that AC fired up. If anything happens, I will call the park service, and the park service will get you out there because the park service doesn't want corpses along the road. So they'll come get you. It should be fine. But again, I'm not going to ever see 128 degrees in Bloomington no matter how bad my air conditioning goes in my apartment.