2005 Aveo Wheel won't turn

[mairj40]

We have a 2005 Aveo hatchback, automatic. My son was leaving a friend's house in it today and suddenly the front left wheel stopped turning. He was able to put it in neutral and push it back to his friend's house. I initially thought it would be a wheel bearing. But the more I think about it, I am not sure since he was able to push it in neutral. Anyone have any ideas what to look for?

[MetroMPG]

If it was a wheel bearing, you would have known in advance from a loud rumbling/roaring noise that wheel would have made (proportional to road speed) while driving.

I have to wonder if it's a collapsed brake line. I had this happen once: after pressing the brakes, residual pressure in the line prevented the caliper from releasing. But after a little while (seconds), pressure will drop off and the brake will start to release. It wasn't enough to lock the wheel, but did cause significant drag on it.