I don’t think you understand how this works. You plan was OK, except that pretty soon after they get sick, you are not ambulatory. You are flat on your back, puking up on the ceiling, and crapping all over that walls.
Well, I was figuring on about three days, from being quite mobile while snotty, ill and infectious, to being immobile and incapacitatedly unable to spread their Ebola joy. Could cover a lot of territory. Or, an uninfected jihadist buddy/sidekick could cover the driving and transporting of said sickie, until he’s too done in, and then the newly infected buddy takes up where the other left off.
Or, somebody with a vial of fluids from an Ebola dude, leaving little drops here and there, as he travels along. Possibilities seem endless. And oh-so-easy.