A driver killed his own step-sister in an illegal drag race after she was thrown off a motorbike she was riding and landed in the path of his car . Aaron Bridgeman smashed into his step-sister Vicky , 40 , who was riding pillion passenger on a motorbike driven by a friend but was flung into the road after hitting a puddle . Bridgeman , 35 , who does not have a driving licence , could not stop his Peugeot in time and ran his step-sister over before she was hit by another car . Scroll down for video . Aaron Bridgeman ( left ) killed his step-sister Vicky ( right ) in an illegal drag race after she was thrown off a motorbike she was riding and landed in the path of his car . Biker Jason Szalkowski , 32 , was thrown from the motorcycle and left 'badly injured ' after hitting floodwater on the lane near Caerphilly , south Wales . Bridgeman then fled the scene because he did not want to be caught driving a borrowed car without insurance . Prosecutor Ieuan Bennett said : 'Bridgeman had been racing the motorcycle and was literally right behind it the car was unable to stop or get out of the way . 'Bridgeman simply was n't able to avoid his own step-sister as she went over the front of his car . ' Newport Crown Court heard how Bridgeman briefly stopped his car before fleeing the scene of the accident in December , 2013 . Mr Bennett added : 'He looked briefly at Jason Szalkowski , who he knew well , and at the body of his own step-sister . 'He then got promptly back into his car and drove off . ' Ms Bridgeman was riding on the back of Jason Szalkowski 's ( pictured ) motorbike when it hit a puddle , flinging her off the bike and into the road . Ms Bridgeman was run over by another car as she lay in the road . The driver thought he had hit a sheep because of her white jumper . Mr Bennett said it was 'impossible ' to say which impact killed Ms Bridgeman - also known as Claire - but that she died as a result of the race . Mr Szalkowski could have faced prosecution but it was decided it was 'not in the public interest ' because he was so seriously injured . Bridgeman , from Caerphilly , was found guilty of causing death by dangerous driving and admitted to driving without a licence and insurance , fleeing the scene of a crime and failing to report an accident . In interview he told police he had left the scene because he did not want to be caught driving a borrowed car without insurance . Jeffery Jones , defending , said : 'He accepts a severe sentence will follow from such a conviction . ' Bridgeman will be sentenced at Newport Crown Court on March 27 .
Aaron Bridgeman killed his step-sister Vicky during an illegal drag race . Ms Bridgeman was flung from back of a motorbike into path of his car . Step-brother ran her over before fleeing scene as he had no insurance . She was hit by another car and it is not clear which impact killed her . Unlicenced Bridgeman found guilty of causing death by dangerous driving . Motorbike driver was also injured in the crash near Caerphilly , south Wales .