The present invention provides a method for forming a black electrode by performing sintering at a temperature in the range of 500-600\xb0 C. Whereas primarily intended for automotive use, the belt wrench is equally useful in the installation or removal of the gears of any timing belt mechanism. This estimate is based on a time average of either phase or correlation samples. In an embodiment, the system includes a coupling unit to separately couple or not couple the vehicle to one of multiple separate components of the roadway guideway, so that the towing apparatus, and therefore a towed vehicle, can switch roadway guideways by coupling to one or another component of the roadway guideway.