I'm only suggesting that mirrors work both ways. If you stand 1m away from a mirror, you will see "yourself" 2m away as a reflection. (1m you:mirror + 1m mirro

I'm only suggesting that mirrors work both ways. If you stand 1m away from a mirror, you will see "yourself" 2m away as a reflection. (1m you:mirror + 1m mirror:reflection) If you move 1m backward, you will see the reflection now 4m away (2m you:mirror + 2m mirror:reflection). Speed works the same way, if you step toward the mirror at 1m/s your reflection will approach you at 2m/s. The same thing applies to LiDAR, either it sees the mirror and calculates the proper distance, or it sees the things reflected in the mirror at 2x actual distance and/or 2x relative speed.