"The Black Coach is one of the objects among the fey that has energy, a life, of its own.  It was not created by any fey or ancient god that we knew of.  It has simply existed for as long as anyone can remember.  Six thousand years and counting. Of course, then it had been a black chariot pulled by four horses.  The horses were not sidhe horses.  They didn't seem to exist at all until after dark.  Then they were things of blackness with empty eye sockets that filled with leprous flame when they were hooked to the chariot...

Then one night not even twenty years ago the Black Coach had vanished and the limo had appeared.  The horses never returned, but I've see what passes for an engine under the hood of this thing.  I swear that it burns with the same sickly fire that filled those horses eyes." - Kiss of Shadows