Let me get this straight, first, he designs and builds a GPS with "extended track log and batteries." Next, he gets DHL to fly much of the way while saving countless hours but expending countless pounds of fuel. And he also gets dozens of people to drive around certain places too small for an aircraft.
I find it very hard to believe that DHL (or any other airline) would agree to fly some of those circuitous routes over the seas, much less land, even assuming they could coordinate those flight plans with the dozens of air control centers.
No, what I
would believe is that he was able to get the coordinates of specific points around the world and
then connect the dots. This would easily allow for some "artistic license" in displaying the 'self-portrait.'
But I'm known for being hard to convince about some peoples capabilities, knowledge, skills and even veracity! Especially when the interweb is involved!
"Sure I did it, it's even on YouToob!"