I really hope that somehow Hank doesn't make it out alive because it would just be too unbelievable, but then they left it as a cliffhanger so I keep thinking that maybe Jesse gets into Walt's car and rescues him.
I can't imagine Jessie rescuing Walt. At this point, I don't believe anybody in the DEA knows about Walt except for Hank and Gomie. And Jessie. Assuming both Walt and Gomie are killed and Jessie is back on Walt's side, I don't know who Walt would be running from.
So, either Hank or Gomie survive the ordeal or Jessie survives as active state's witness. If they all die, Walt wins and the show is over.