The lady, from Tarneit within the metropolis’s west, is in a important situation.
She was flown to the Alfred Hospital after she in some way got here out of the Honda Sedan pushed by a 28-year-old man, at 11.30am.
The man stopped and has spoken to Victoria Police.
One lane of the street was closed at Little River, 45km from town after the incident, with visitors queuing for kilometres.
Police are investigating and are interesting for anyone with any info to contact them.