Police in Indiana are investigating a car crash that was apparently the result of a spider on one mother's shoulder.

Spiders and nervous reactions often go hand-in-hand.
An investigation is under way after a Dodge Avenger slammed into a school bus in Indiana.
A mother was attempting to back up when she apparently noticed a spider on her shoulder. 
The shoulder-encroaching arachnid prompted the mom to jump out of the moving vehicle, leaving her nine-year-old son alone inside. 
The child acted fast, climbing over the back seat into the front where he attempted to slam on the car's brake, but