Woman pinned under car in Melbourne

A mother suffered a broken leg when she was pinned under her car trying to stop it rolling down her Melbourne driveway with her young son inside.

The 35-year-old was trapped under the car for 30 minutes on Tuesday morning in outer Melbourne before being airlifted to Royal Melbourne Hospital in a stable condition, an ambulance spokeswoman told AAP.

The woman's toddler was reportedly unharmed.