A couple? He's trying to race in Indy this weekend
BMW has already said they are waiting till the last minute on Thursday after a FIA mandated medical checkup to name a possible replacement driver.
He actually remembers everything from the crash up until hitting the last wall (which turned the pod on its side). He even regained consciousness during his extraction from the car and could describe the accident in detail. The corner workers and medical personnel at the scene were shocked at how coherent he was. Of course, his first question was "Can I race in Indy this weekend?"
According to the head of safety for the FIA his relative health is attributed to safety changes as recent as the last two seasons, like HANS devices and other mandated cockpit changes. Its truly amazing. A crash like that even a few years ago would likely have killed him, or at least seriously disabled him.