Mr Williams was convicted at Maidstone Crown Court of 15 offences of damaging property, being reckless as to whether life was endangered, one of assault causing actual bodily harm and one of common assault.
Alex Rooke prosecuted the case whereby Mr Williams threw rocks at people whilst in his delivery van. Judge Martin Joy had previously adjourned the case for a psychiatric report.
Judge Martin Joy sentenced Mr Williams to 10 years imprisonment:
"The impact of this series of offences could have been fatal. This was sheer wicked activity on your part."
Many of the drivers targeted were women, some with young children in their vehicles.
Two drivers were injured by the large rocks. One mum was struck in the face. The rocks shattered windows or left dents in bodywork. One victim whose windscreen was smashed thought she had been shot at and searched for a bullet.
Alex Rooke maintains a busy 50/50 defence and prosecution practice, and believes this is the best way of learning and retaining the skills applicable to both sides of the courtroom. He has wide experience of cases involving serious violence, grave sexual offending, fraud and organised crime.