Motion in a straight line

A police van moving on a highway with a speed of
30 km h–1 fires a bullet at a thief’s car speeding away in
the same direction with a speed of 192 km h–1. If the muzzle
speed of the bullet is 150 m s–1, with what speed does the
bullet hit the thief’s car ? (Note: Obtain that speed which
is relevant for damaging the thief’s car).