Originally Posted by
stargold
Cheap and plentiful... unless you were going to Abu Dhabi!

(Well, still cheap, but not nearly as cheap as intra-Dubai)
I don't know what the secret is, or if there is even one at all, but my take is that if I am booking EK flights with partner miles, the vast difference in miles cost more than pays for the car services. Therefore I would just ignore the fact that they offer chauffeur drive to others, and make my way to/from the airport as usual.
^
On the one hand, OP gets no car for booking through AS, on the other he is not paying 1.5k USD for the privilege of an ex-USA J/F Skywards redemption