If I lost my brakes, I would simply downshift the car and let it slow down as much as possible if I had room to do so. IF not, I would slowly depress the hand/parking brake down while holding the release to slow the car down to a stop.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U