There are materials that can absorb or attenuate laser beams to some extent, but completely rendering police speed laser detectors ineffective is highly unlikely. Police speed laser detectors, commonly known as LIDAR (Light Detection and Ranging) devices, use laser beams to accurately measure the speed of vehicles. These devices are designed to detect the reflection of laser light off a target and calculate the speed based on the Doppler shift.
While there are materials that can absorb or scatter laser light, they are typically not practical for evading speed detection. Most commercially available paints or coatings, including those claiming to have anti-LIDAR properties, are not effective enough to completely mask the reflection of laser beams. Additionally, actively trying to obstruct or interfere with the functioning of police speed detectors may be illegal and could lead to serious consequences.
It's important to note that evading or attempting to evade speed detection is generally against the law and can result in fines, penalties, or other legal consequences. It's always best to drive safely and within the speed limits to ensure your safety and the safety of others on the road.