Negligence—Duty of care—Common carrier—Motor accident resulting from
dislocation of tyre rod ends—Facts raising prima facie inference of negligence against
defendants—Defendants failing to displace inference by showing that vehicle in good
and roadworthy condition and that they exercised reasonable care and skill—Whether
defendants liable— Whether dislocation of tyre rod ends and treacherous surface of
road rebutting prima facie inference of negligence.