OOOOHHHH NOOOOOO!
Well, I'm glad you're ok (you are, right?)
That's a lot of frustration you dragged into your car with you...
You said you guessed on many answers; is that what they say to do? I hope you are a good guesser.
I prayed that God would bring to your mind those things you studied. Perhaps in guessing, you got 'em!
Yes, as Eskie said, you can retake it. And if you do have to (you might want to if it's a low score anyway) you'll be familiar with it, and the testing situation there.
Cars can be replaced. Tests can be retaken. (((Moonkin))) can't be remade!!!

Glad you're okay!