Having just been hit by a car, I rushed over to see if Gunther was still breathing.

This sentence may contain a misplaced modifier. If so, choose the correct revision; if not, choose 'correct as is'.

The sentence contains misplaced modifier.

According to the sentence, the one got hit by the car was Gunther. However, putting "I" as the subject of this sentence means that "I" was the one got hit.  ("Having just been hit by a car"  and "rushed over..." were done by the same person - "I")

So that, this sentence should be corrected, the following is an example:

"Gunther had just been hit by a car, I rushed over to see if he was breathing."

no

i think that will have something to do with the mississippi river but google will know the full answer for sure