Was headed home from SFO on 80 eastbound., right around Mare Island and the chevron. Got impatient at the entiltled butt holes who drive in the left lane at PSL so kicked in sport mode, jumped over to the right lane, was hitting around 90 when got my first chirp. Jammed the brakes on and it had to be less than a second a pretty hard alert from the Uniden on 34.7. Never saw the cop, so he may have been on the opposite side, but being as it was at night and a busy area I didn’t have a good chance to look around. WAZE didn’t show any police either EB or WB.