Couple weeks ago i was following two m3 verts (white e92 and black e46) through that very same tunnel around 10pm. We were all doing 70k then out of nowhere they just sped off into the tunnel, weaving in and out of traffic and letting the exhausts make their music. As i continue doing 70 through the tunnel i see a hwp car and officer (with a radar gun in his hand) in the breakdown location about 3/4s of the way in... Just standing there waiting to ping someone. How the fk did he miss them? They were on WOT til half way through lol (must be the doppler effect)
Good luck with your case mate.