It's a nice idea, but in no way practical, especially in 60 days..
I have friends who have done it onTVS/Bajaj 150's around Africa, but in 18 months ...small enough to lift, small enough to put on a ferry, and now available and easy to service in many African countries, but in 60 days you would be nuts..
The carnet is a problem as well, and selling the bike in Cairo would void the carnet.. Selling it you basically have to give it away, imo, although a few tourist places might take the plunge. But the paperwork will be a huge hassle on both sides.
And a two hour work out every day means riding peak sun hours, which isn't the smartest idea.. Sure you could say afternoon workouts, but riding 300km a day wipes you out
Have you ever traveled on a motorcycle??Suddenly security, sleeping, luggage and so much more become big issues..
The bikes i refer to run about 1500€ in Africa.. Why not travel through SA, maybe Namibia, and sell it quickly a few weeks before leaving by pricing it to sell quickly..
Make sure you have proper insurance as well.. If you don't have a motorcycle license per se, you pretty well void all motorcycle accidents health coverage
