Are We There Yet?

When Allison and Mark left London for Africa they still had not bought a map or figured out how to use a GPS... so when they got off the M25 on a BMW 1150GS things were looking up.Now were heading back to Africa this time in a Nissan Patrol armed with a box of maps but still unable to figure out the GPS (though we can fit in the Dummies guide in the hope to figure it out en route!)