Calle sent a tip about a pal of his who made the journey from Cape Town to Nordkap in a 15-year old Land Rover with his wife and 3-month old son. He’s written a book Kapstaden till Nordkap på 333 dagar (in Swedish), which I’m hearby giving some linklove.
My friend Bastian made the journey from Cairo to the Cape some years ago, as did Paul Theroux, but they travelled alone without kids in diapers.