"Yeah -- Dee's short for 'DeLorean,'" Marty says with a little nod. "And huh, that's a point. . ." He looks around, as if one might have popped into existence just now. "Then again, Dee doesn't like to spend too long here when she visits. She likes the people, but all the different timelines crashing up against each other -- it can make her kinda sick, sometimes. Downside of being a time machine and sensitive to all of that."