Olivia walks into the Harvard lab just in time; Walter and Astrid are doing a reenactment of Olivia's car accident, using a toy car on the table, a cluster of IV bags on a stand as a counterweight to rapidly pull the toy car forward, and a frog as the hapless passenger. As the car stops abruptly and the amphibian goes flying through a bullet-time array of Polaroid flashes into a waiting fishing net, Olivia is neither traumatized by reliving the incident nor offended at being compared to a frog. In fact, she looks kind of touched as Walter shuffles through the pictures and hands them to her, saying, "No matter what I try, I can't make the frog disappear." Yeah, I think it normally takes more than a car crash to trigger a dimensional breach. And even if he succeeded, what then? Wait for it to reappear and start croaking in Greek? After addressing some complaining from Astrid, Walter tells Olivia that she was missing for an hour before she came through the windshield. "He thinks you traveled to another universe," Astrid informs her, as though this is news. Walter starts explaining to Olivia about alternate universes, until he realizes from her patient smile that they've discussed this before. She could at least admit that having a semi-crazy guy who forgets what he's told people is handy for filling in new viewers. Instead, she says she went somewhere and met with someone, "But the rest is like a dream I just can't quite remember." Yeah, neither can we. Damned inconvenient for that meeting with William Bell to take place during the summer hiatus. Walter says she might recall eventually, and starts getting all verklempt about having thought she was dead. "I don't know what I would have done," he says. Well, he probably would have gotten his ass crammed back into St. Clare's, for starters. She's touched, but he can't leave a tender moment alone, lightening the mood by saying she appears to be fine now. "Appear to be?" she teases gently. Walter explains, "Traveling to an alternate reality has its consequences," but doesn't share what those might include. Instead, he gives her what I'm sure he intends to be a reassuring wink. Either that, or he's briefly closing one eye to make sure he's not seeing two of her. Suddenly Peter calls across the room to Olivia, "You feel up to going for a drive?" Well, it's five hours, according to Google Maps, so she'd better be.