Thanks, everyone for your comments! I am checking everything as carefully as I can. I haven’t noticed any change in driving performance. The one thing i am not worried about is the tires since the spike was at about the center of the car. I will continue to watch the display to see if fluids go down unusually. As one of you mentioned, I will keep smelling for gas. My next service is already scheduled for April. My appointment is at the dealership.
The day it happened I was so upset. The people at work told me the same things as some of you did: that shield probably protected the car and the scratch I heard was the spike bending. I did not hear the scratching under the middle area of the car, it was more to the front.
I hope I did get lucky. Thanks to all of you for taking the time to answer my question. I’ve been kicking myself for the past week for being so stupid!