Google Eyes Flypaper-Style Coating to Keep Self-Driving Cars Clean

Google has filed a patent for a sticky, flypaper-like surface coating designed to keep sensors on self-driving cars free of dirt and debris. The idea addresses a practical problem for autonomous vehicles: cameras, lidar and other sensors must stay unobstructed to read the road, yet they are constantly exposed to bugs, dust and road grime.

Rather than relying solely on wipers or sprays, the proposed coating would trap contaminants on a replaceable or cleanable layer, similar to how flypaper captures insects. That could reduce the frequency of manual cleaning and help maintain sensor performance over long drives.

The patent filing reflects Google’s continued interest in the hardware challenges that surround autonomous driving software. No production timeline or specific vehicle application was disclosed in the source material.