Hostal Santo Domingo Madrid compartió un enlace.
A useful advice for your next trip: When arriving at Barajas airport, look out for a taxi driver with a license… http://elpais.com/elpais/2013/07/24/inenglish/1374675829_462358.HTML

Madrid’s pirate cabbies
elpais.com
The capital s taxi owners are fed up with unlicensed drivers taking their custom, and aren t afraid to get violent with repeat offenders