Have any of you trabbi folks had the rear brakes slowly lock up at speed? I thought the car was running different / low on power for the past few days. So for what ever reason, I decided a good run at 70 mph on the interstate would sort things out... I kept going slower, and slower- then saw a tremendous amount of smoke out the back. Then I realized it wasn't the engine grenading- but the rear drums almost on fire! So there I am, standing on the interstate, under a trabant. Anyway, I noticed the brake lights were on, and the brake pedal was firm, and could not be pushed at all. So a idea hit me, I panicklly found a ddr wrench in the trunk, and opened the rear brake line on the master cylinder. It shot out every where, and the brakes were free. Without even touching the middle pedal, I proceeded to go 70+ mph to the next exit. Wasn't sure anything would happen when I stepped on it, well since I'm typing this- it stopped well enough to get me home. So the issue is somewhere near/ or at the master cylinder. The car has has within the last 3000km's a full brake system done, new cylinders hoses, pipes, shoes, master cylinder. Never had this happen on ANY other car. Maybe something was in the line, and blocked it from returning? Or the M/C cap is not venting?