This can’t be said for Mad Love, in which bad girl Casey (Barrymore) inflames nice guy Matt (Chris O’Donnell) at their Seattle high school. She freaks out, he springs her from a psychiatric ward and off they vroom. This must be the lowest-octane road movie ever, in the hands of British director Antonia Bird. O’Donnell is amazing: his face never registers one significant expression. Barrymore’s does; but Paula Milne’s script allows her little beyond an all-purpose teen angst. “Mad Love” contains not much madness or love, not one fresh insight into kids or parents. At a moment of stress, Matt starts chomping on Cap’n Crunch. That’s scarier than the visions of dystopia by Wilham Gibson.