If it's fishy smelling mist coming from the vents then it's a heater core, but it wouldn't stop after a while of driving, it would infact get worse.
If it's smoke, then you need to find the cause right now, as that is a fire hazard.
About it not being able to move.
The brake pads have probably rusted to the rotors.
This could happen on 1 wheel or all 4.
The metal backing plate of the pads have rusted, the rusted metal has expanded, and is now squeezing on the rotor just as if you had the parking brake on.
This happens most often in the rear.
Friday, July 3rd, 2009 AT 7:39 PM