ADVERTISEMENT Some 18 per cent of the nearly three million motorhome owners in Europe will travel to Portugal this summer, according to Camping-Car Park, the European network of Motorhome Service Areas (ASA). The country, with 13,000 registered motorhomes, is attracting more and more European tourists who want to travel in this way. They spend an average of €52 per night. They are mainly Spaniards, French, Italians and Germans who spend at least three weeks touring the country from June to