The video, which is fucking insane, plays out like something out of a Quentin Tarantino movie. Like Pulp Fiction's Jules and Verne discussing the particulars of the French Royale with Cheese while driving to a hit, Julia and the cop pay closer attention to her calendar—fitting in that perfect date to kill a guy amid a hectic work schedule—than they do weighing the actual ramifications of murder. The laughter, the long, devoid-of-morality conversation about killing, even a Beach Boys soundtrack as background noise… A three-week Tarantino coke binge couldn't script this better.
As for Julia, I guess you can look at her two ways: Either she's a complete sociopath who can separate herself from the realities of death, or she's really, really dumb. I'm leaning toward the former actually.
(Also, not to take away from the seriousness of the situation, but holy shit, anyone who has bought a car recently would kill for the deal this hitman gives Julia—only $100 down on a $50,000 transaction. You're not going to make it far in the hitman world with that kind of charity.)