Cars parking on green area children's play area .

Cars are damaging the green. Cars driving straight over and not bothered about wrecking the grass. Problem got worse the last couple years,always been an area for children to play.And when cats parked the grass isn't getting cut. Would be a good idea for the grass area at the back near motorway fence to be made into parking bays. And a small fence round the green area in the middle. Would appreciate someone to come and look at it.