CCTV in petrol car

Is the idea of having CCTV in petrol car good? Can this plan improve the service of Malaysia policemen? Will the bribery and corruption reduced by this move?

Is European countries, CCTV or onboard camera has been installed on the petrol car and one of the reason for installing the gadget is to use as proof should it be needed. As for cutting corruption, there are many and different ways of avoiding the cameras, so it's not so much of cutting down the corruption cases.

Generally it's a good practice to install CCTV on petrol car so in case any ambiguity of duty carryout by policemen, there's at least a proof of what they did then!