Torts — Automobile accident — Rear-end collision — New trial — Trial court failed to apply correct legal standard to motion for new trial, which is whether jury’s verdict was against manifest weight of evidence, when it granted new trial on ground that its recollection of a certain witness’s trial testimony about the accident differed from the representation of the witness’s testimony in defendant’s response to plaintiff’s motion for new trial — Remand for reconsideration of motion for new trial applying correct legal standard