If you evaluate Usain Bolt's stride...he has an uncannily similar high back kick as Bekele, even though he is about a foot taller, with much longer legs. Bekele somehow has ingrained this form and can sustain it through a marathon. I suspect the best was to "develop" Bekele's stride is to do a lot of sprint drills? Anyone have any idea what type of drills would someone like Usain Bolt does on a regular basis?
Maybe drills. Maybe hills.
You definitely wouldn't want to consciously try to change your stride to his. Specifically, I think a drill where you try to run with high foot inversion would actually make you worse at foot inversion while running and hinder proper biomechanics. So to get high foot inversion, forget about it while running and just train properly.
I suspect doing lots of drills including running/sprinting backwards and jumping forwards and backwards could strengthen the necessary musculature. Notice how you have to have high foot lift to run backwards, while at the same time it's almost impossible to practice inversion at the expense of useful movement and speed. Also, practicing running very very steep short hills until you can jog up them aerobically without muscle fatigue.
Mainly, developing and practicing a 90 minute circuit of drills including the above and doing this circuit most days a week might do the trick. There's a lot of potential for muscular strength that most runners don't tap into.
All of the above could be nonsense, I have no idea.