Question: What European pickup was based on Britain's best selling car of the 1970s?

 It was based on medium-sized Ford passenger cars, originally the Ford Cortina and from 1988 the Ford Sierra. The Ford P100 is a car-based pickup truck that was built by Ford from 1971 to 1993, initially in South Africa, and later Portugal.  Initially marketed as the Ford Cortina Pickup, the P100 name was adopted in 1982.  The P-100 name had previously been used on a small North American panel van in the 1960s. <SEP> Canadian singer Nelly Furtado has released six studio albums, twenty singles, one video album, one live album, two compilation albums, three extended plays, and twenty-three music videos.  Furtado released her debut album "Whoa, Nelly! " in 2000 and it became a commercial success selling 9 million copies worldwide.  It has been certified multi Platinum in countries such as Canada, United States, Australia and New Zealand.  The album spawned four singles including the successful top 10 hits; "I'm Like a Bird" and "Turn Off the Light".  In 2003 she released her second album "Folklore", while the album did not match the success of her previous album in such markets as the US and Australia, it did however become a success in several European countries.  "Folklore" has sold 3 million copies worldwide.  The album produced two European top 10 hits; "Powerless (Say What You Want)" and "Força", while "Try" peaked inside the top 10 in Canada.  Furtado's third album "Loose" (2006) became her best selling album of career with 12 million copies sold worldwide.  It also reached number one on the album chart of nine countries and was certified multi Platinum in several countries such as Canada, UK, Australia, Germany, Switzerland, Austria and New Zeeland.  The album spawned four successful number one singles; "Promiscuous", "Maneater", "Say It Right" and "All Good Things (Come to an End)".  "Loose" was one of the best selling albums of 2006–2007 and is twenty-second best-selling album of the 2000s.  She released her first Spanish language album "Mi Plan" in 2009 which became a success in Europe and on the Latin charts.  The lead single "Manos al Aire" became a European top 10 hit and also topped the "Billboard" Hot Latin Songs chart, making Furtado the first North American singer to reach number one on that chart with an original Spanish song.  "Mi Plan" has been certified Platinum (Latin) in the US.  In 2010 she released a remix album "Mi Plan Remixes" and her first greatest hits "The Best of Nelly Furtado".  Furtado released her fifth album "The Spirit Indestructible" in 2012, followed by "The Ride" in 2017. <SEP> The Pontiac Grand Am was a mid-size car and later a compact car produced by Pontiac.  The Grand Am had two separate 3-year runs in the 1970s: from 1973 to 1975, and again from 1978 to 1980.  It was based on the GM A platform.  Production of the Grand Am was canceled in 1980 when it was replaced by the Pontiac 6000.  The Grand Am was reintroduced in 1985 when it replaced the Pontiac Phoenix.  It was Pontiac's best selling car and later replaced by the Pontiac G6, so named as it was intended to be the 6th generation of the Grand Am. <SEP> The Ford Cortina is a car which was built by Ford of Britain in various guises from 1962 to 1982, and was the United Kingdom's best-selling car of the 1970s.