85 300D HELP! not rolling??? brakes stuck?

[snipsa]

A friend just called with a problem. He was on the way to work got on the road o.k. and the car just kept slowing down no matter what he did with the pedal. (I dont know if the car was straining or not) He pulled into a parking lot and now the car will not move an inch but it tries to (lurching forward or reverse with accellerator pressure but wheels dont budge) In neutral it also wont budge. He does use the parking brake every night and says it still seems to apply and release o.k.
Could a stuck parking brake cause this? Could It be some bizarre transmission problem/failiure? I dont know if it rolls a small amount then locks or if it will roll just not with the effort he is giving it. I am not with him and he is not mechanically inclined so the car is stuck until I get off of work.

It just so happens the lot is 100ft from my driveway.

If it is the parking brake, what are the methods to release?
Any other ideas what happened? I would think the engine could overcome the parking brake but he says no go.

HE JUST CALLED AGAIN:

He was able to get the car to move forward a few feet under much engine effort. He says engine seems to run fine so I am guessing the engine is just trying to lug the vehicle with stuck brakes or something. How do you un-stick the brakes? This car is his daily driver so it's not frozen from sitting too long or anything. And apparently he uses the parking brake every time he parks and has never had any trouble before.

Thanks in advance for any help and I'll let you know what happens.


Ben