This illegal and dangerous child car seat was spotted by police in Rugby. PARENTS are being urged to get their child car seats checked at events being held across Warwickshire next week. The advice comes after an officer from Warwickshire Police discovered an illegal and dangerous child car seat was being used in a car in Rugby. who issued a warning in the news – “Return of ‘killer car seats’ – fabric seats spotted at checking event”. The illegal child car seat pictured had been purchased unknowingly online and would offer a child no protection in the event of a crash.