That purpose appears to be the systemic seduction of hapless young males for nefarious reasons.
Glazer has some decent moments in this movie.
She's easily the best thing this film has going for it.
Johansson is impeccable in the role of Laura, carrying off a remarkably good English accent.
I'd just like to point out that I adore this film.
She manages to be both blank, terrifying and wide-eyed throughout the film, balancing the emotions or lack thereof her character battles with, brilliantly.
All in all, if you're looking for the ideal Ninja Turtles movie, go for this by all means! An excellent movie - I was lucky to find this foreign release of the original 1990 Teenage Mutant Ninja Turtles movie, as its own separate feature, with the original theater poster as the Blu-Ray cover.
As Patrick wrote, the men Johansson talked to from the van were spontaneous flirtations by the actress.