I have a question about a part that fell out of my car engine this morning?

I was right in the middle of the freeway and I heard it crack off and saw it go bouncing to the side.... no other cars were around me at the time.
The car is still running, just a little smoke pouring out. Do I really need to pay to get the part put back on?"
Update: dear CJ: the muffler is still there... :)
Update 2: dear dwl20022001: can't see the part - it's still on the highway....
smoke is from the trunk I think... is that at the back? this is at the front.
13 answers 13