Minibuses use cameras to record internal images as well as external. Passenger footage can be very important not just in the event of an accident but monitoring unruly behaviour. School Busses, Stag/Hen Parties and Lads jolly days out.
Cameras in taxis are common place through Europe, providing a much needed deterrent from Theft and Violent attacks.
Cameras 4 Cars have Dual camera systems which can record in high definition both forward driving video and rear cab facing video capturing the passengers every movement.