Mad Max's car is also called The Intercepter I wonder if this is a direct rip off or does that count as homage.
Also my read on the "Jacobs Ladder" of it all is that Jamie and Keri both die in the attack at the beginning and Billy concocted the revenge fantasy scenario to cope with the trauma of loosing his brother and his brothers girlfriend in such a traumatic way and giving them a happy ending, sort of like Atonement with a supernatural revenge elements, spoilers for the movie Atonement. This could be the reason his character acts like such an exposition dump, he's literally telling you the story.