the metal in bills can be detected when enough are stacked together. they’ll get the amount you’re carrying within a couple hundred dollars
the RFID tags in your tires can be read from 20 yds
obviously a plate reader that does OCR and looks up the information immediately
dash cams gather facial recognition data as you pass
a laser could be easily added to allow the cop to listen to any car he can focus it on
cellphone data and probably the ability to listen
wifi war driving to pick up open nets (ala google street cam)
just Dam# I am going to huddle in my house out of site /s