Hmm.. there is a screw sticking out form under my car

[jonnydoe48]

in front of the the left-front tire, there are some threads of what looks to be a the bottom of a gold screw sticking out. (a bolt) I checked the other side and there is no sign of any screw there anyway.

what is it?

 

[TX Speed Demon]

Someone else posted about this about 2 months ago. They found it in their driveway after pulling out. No one knew where it came from or what it was for. You should take a pic with a digi cam and post it. Knowing the source location would help some of the more knowledgable folks figure out what it's for.