As a kind of desert or dead piece of land,where the citizens 'use' horses or other vehicles" to get what they want.The name of the 'horse' is not important or simply does not matter to the one who uses it for their selfish desires.But the lyric,a fly with no buzz could refer to a 'joint' that has lost it is potency somehow, meaning even the power of drugs have died in this metaphor of a dead land