Thats just weird he didnt notice..Although I kind of think he did & just pretended it didnt happen or something like that.I really dont see how its possible to miss something like that,I mean cmon you have a HEADLESS body HANGING out from you car AND youre all covered in blood.Didnt he think to himself when he got out of the car "Hey where did all this blood come from"?
I think he did notice,story just sounds too fishy.