Can a cop clock 2 cars at the same time,for the same exact speed,while he is moving in the opposite direction?

nope he can't....there are 2 flaws to the science behind what you have described. 1) radar that cops have doesnt work if the cop is moving and he targets another moving vehicle unless the cop and the target are moving the exact same speed and direction. 2) he can't clock (target) 2 separate vehicles simultaneously, but he can target one and see its speed, then have targeted you and seen yours.