Some ramblings on LIDAR countermeasures:

On the front of the VX there are three prime targets for LIDAR - license plate and the two headlights. The license plate is painted with special retroreflective paint that makes it ideal for LIDAR and the shape of the mirrors in the headlights produce similar results. I don't keep a plate on the front of my VX and I bought those carbon-fiber headlight covers which, having a kind of screen-door pattern, I believe should reduce reflections of external lights like LIDAR by a good bit because they block the light twice, once coming in and then back out on the reflection. Also, the darker your car, the less reflective it is to LIDAR, black being the least reflective and those metalics like kaiser silver being the most reflective.

If you can't get away with only a rear license plate, getting a polarized license plate cover ought to help significantly since laser light is coherent (i.e. all lined up in exactly parallel waves) it will either all bounce off the cover in random directions, or mostly pass through and then bounce off the license only to be significantly filtered by the polarization on the way back out. Polarized headlight covers might be useful too, but I'm sure they would have to be custom fabbed given how rare the VX is. I did see some "goo" for sale on the web that you are suppossed to spread over your headlights and maybe the front license plate too. It dries clear, and they don't explain how it works, but I'd hypothesize that it is clear to the visible spectrum but "black" to light of 904nm (which is what all American, and most other country's LIDARs runs at).

Besides lidatek, there is the blinder which seems to offer more coverage. But neither publish their specs, particularly the wattage, efficiency and viewing angle of their LEDs, so you can't do much of a comparison without trying them out. I did read a review of the blinder and a couple of other "dumber" ones (no computer to modulate the LEDs to match the LIDAR's carrier, I think) and the blinder was the only one to work at all and then only outside of like 500 feet.

Like Albert mentioned, a police scanner is helpful too, the Uniden BearTracker BCT7 is probably the best for this since it not only listens on long-range police frequencies, but it also knows, state-by-state what freqs are used between the low-power wearable units and the retransmitters in the cars. So it can tell you when there is someone, most likely a cop, broadcasting on those frequencies in the near vicinity (like a mile or two). You can usually get the BCT7 from the Uniden website as a refurb unit for, I think, $99.