A news flash on the RTP (Portuguese TV) web site today reports that a regulation has been published in today's Diario da Republica (Govt. Gazette) providing for the implementation of a pre-payment voucher costing € 20.00 and allowing circulation for unlimited mileage on motorways with electronic tolls for a period of three days.
Report here in portuguese:
http://goo.gl/xLvys
As soon as the modalities of acquiring one of these pre-paid cards is clear will post more info.
