Loud engine squeaking

Wife drove the car a week hopped in to take it to work got to the highway the light came on, six miles up the highway a loud squeaking (sounding like a walrus). Car shuts down and now won't even turn over just clicks. Now my mind went for the worst, I believe it sounded like a cam bearing going out and now she's locked up which is causing the click only when I try and turn it over. Just looking for a second opinion.