Negligence – Motor vehicle accident while claimant being trained to drive employer’s bus – Employer’s Liability – Duty of care owed by an employer to an employee – Whether employer provided employee with a safe system of work – Whether employer should have trained an employee who had no driver’s licence and no prior experience in driving – Whether employer provided employee with adequate training – Whether driving instructor did all that he reasonably could do to assist the claimant to avoid the accident – Defence of contributory negligence and volenti non fit injuria – Whether claimant heeded driving instructor’s instructions and whether claimant was contributorily negligent – Whether claimant voluntarily accepting risk of accident.