He was driving a dark-coloured car which made off along the bypass in the direction of Holywood. He was described as being aged in his 30s and was wearing a dark-coloured hooded top with the hood up.
“This is a horrific crime that will no doubt send shockwaves through the local community,” said Mr Lyttle.
“My thoughts are with the woman at this time and I hope she will be able to recover from this sickening incident.
“I would urge anyone with any information to contact police immediately.”