There are some cheaper ones now - the K4W2 is a flash LIDAR. But range is always difficult. I think PMD is in use in BMWs. They purport a 90 meter(!) range,

There are some cheaper ones now - the K4W2 is a flash LIDAR. But range is always difficult. I think PMD is in use in BMWs. They purport a 90 meter(!) range, but I've never played with one.