How do you distinguish legal cabs? I live here, and locals tell me half of Bogotá's 40,000 taxis have fake taxi licenses. Nobody's ever told me you can tell the

How do you distinguish legal cabs? I live here, and locals tell me half of Bogotá's 40,000 taxis have fake taxi licenses. Nobody's ever told me you can tell them apart. Even the police and politicians here use Uber.