A 62-year-old grandmother whose car window was shattered by a rock is the latest victim in a string of dangerous attacks on moving vehicles.The Kiama Downs nurse was driving home from work on the long weekend when a rock smashed into the side mirror of her Toyota Corolla before ricocheting into the passenger window.Despite the shock, she was able to avoid a more serious incident and keep the car on the road.The attack occurred at 3.30pm on Sunday on Meehan Dr, Kiama Downs, just minutes from the Princes Hwy location where young Orient Point beautician Nicole Miller was hit with a rock while travelling in a car in 2007.Ms Miller was left with long-term brain damage, and daily tasks such as fastening buttons, ironing, cooking, dressing and showering take twice as long as they did before.The Kiama Downs woman was driving at 50km/h and was shaken by the incident."I was in shock, trying to figure out what had just happened," she said."The sound was terrible, quite frightening."It makes you think when Nicole Miller's accident happened just over the hill."The woman's daughter told the Mercury her mother had been in shock when she arrived home."If Mum wasn't the good driver that she is she might have hit a street sign, oncoming car or anything," she said."Surely people around here, of all places, realise how dangerous and stupid it is to throw rocks at cars."While the Kiama Downs woman could not pull over soon enough to spot the offender, the young age of perpetrators identified by police in rock attacks in recent months is troubling.A seven-year-old boy was the youngest of five children who were caught throwing rocks at passing cars on the Princes Hwy at South Nowra on May 3, while last week four high school students were arrested after a bus was allegedly hit by a rock on the highway in Nowra.In November a 2kg rock was thrown through a Sydney man's windscreen as he drove on the F6 at Berkeley, hitting him in the chest and wrist. The 56-year-old drove for almost a kilometre before he was able to pull over.