Don't think Wheely can drive & hack like that. BUT the car has an autopilot, we are not in hot pursuit yet so it should be doable if we are fast in the host.
Good thinking Kynos-san, since the rigger is still councious it means that he has at least 1 or more physical condition monitor boxes remaining. With a heal from the Valkyrie and the Spirit it should be enough to get him over the 6P from the Dumpshock.
Autodoc Healing 12d6t5 3Meh that's only 1 box healed, but it should also give a diagnosis of the patient health. Even if the spirit heal does not bring him back to full health he won't die unless he takes (Body) points of overflow damage (and the module can stabilize him).
A Dumpshock is 6P so best case is the spirit heals 4+ boxes.
@Mulcarn
Since your spirit only has 1 Service anyway can't you send him with a Remote Service to help?