When the state of Colorado decides to trample on your dreams, you must be patient while awaiting justice. The taxi drivers who formed Mile High Cab, for example, have waited more than four years since they first asked the state for permission to serve metro Denver. Now their saga, in its final act, rests with the state Supreme Court. The court is expected to rule soon — perhaps next month — on Mile High's challenge to a bureaucratic travesty, two years after the Public Utilities Commission rejected the company's application to operate for fear that it would spark "destructive competition."