That's unfortunately why I haven't gone further afield as I just don't have the time off and there no real point just following main roads. There's a report on Advriders about someone going from Tanzania to Moz and how there are no road up there. I get excited just thinking about it.
I haven't completely given up on Angola yet. It's all hanging on if I trailer up to Windhoek or if I travel by bike and then head to Namibia via the makgadikgadi. Going by train seems to be a no go. But if I travel by bike I won't have time for the Angola leg. I've got a very nice looking route going up to Kunene Lodge from Windhoek keeping close to Etosha, mainly river beds in the mountains which is very enticing. Being my first time up there I may not push myself too much and rather just take it easy and a few more rest days.
When are you planning on going?