I'm completely new to car renting!!! So, I've figured out the whole reserve, insurance, pay portion... Now my question is: After I'm done at the counter, I figure it would probably be smart to look at the "rental" before speeding out of the parking garage. Make sure there are no scratches, brake lights work, etc. But do you open the hood and check oil??? My luck the "rental" would be bone dry... and I would end up buying a new engine for them. Then again... I'm sure it would "knock" if it were that low! Please help me... I'm new (and completely freaked out) to renting a car!!!