> You just need to see what the car sensed

I don't think all self-driving cars have the same sensors.

If you have LIDAR model X, and they were using LIDAR model Y, will your system "magically figure it out?

If your car has cameras at 5ft high, and the data is from a camera 6ft high?

Sure, someone could release the data, but will it screw up your models more than it fixes them?

(I totally agree the data should be released, I'm just not sure other self-driving cars will directly benefit. Certainly they can indirectly benefit from it.)