The car is actually TOO careful with potential dangers
Usually, decisions made behind the wheel rely on either a thorough understanding of motor vehicle code, or basic human morality. In the case of the Fusion's autonomous software, adherence to the rules trumps all. The car drives like my grandma -- exceedingly timidly and politely.
Example: the software was designed to recognize crosswalks, slow for them, and wait for pedestrians to possibly cross. As we approached the striped white lines, the Fusion decelerated, noticing a man on his phone standing just left of the crosswalk. For safety's sake, the Fusion didn't budge. Would the man cross? Was he even waiting to cross? After about 30 seconds, the test driver took over.