Fitz has been Turbo to Mack since 2x02. And yes, that was Mack's shotgun-axe that he made at the end of last season.
I'm really intrigued by the Lucy/ghost plot line this season. It's a lot more interesting to me than Ghost Rider. I do like Ghost Rider/Robbie Reyes though. The Mack and Daisy and Fitz scene at the end was just heartbreaking! And I know they wanted Director Jeffrey to reveal his Inhuman status by knocking May out, but why did no one ICE her? Seriously? They had to risk giving her brain damage by bashing her head into a brick wall when they could have just knocked her out with one easy shot?
Also, I'm kinda half shipping May and Piper, though I'm pretty sure they're going the Philinda route this season, which I'm not opposed to, but I really think they work better as just BFFs. I'm also kinda digging the potential of QuakeRider (I think I saw people calling it that on Tumblr). Like, I don't think now is the best time for Daisy to get into a new relationship, and I really don't think Robbie would be a good partner, but they definitely have chemistry.