> This has been an issue for more than ten years

Yes

> Surely someone has started adding various skin colors into the training data.

What has to occur for this to happen:

    * Someone has to take the time and effort to measure things, to identify that there is a problem.
    * They have to get that message out so that it's heard.
    * That message needs to:
        * hit the public hard enough that people demand intervention from their elected representatives
        * or, alert the company directly, and hope that the incentives align. (Will the company make more money by fixing this?)

There's plenty of easier alternatives:

  * Call the problem too hard to solve
  * Call it bad science
  * Call it ragebait
  * Call it woke
  * Make up a bunch of equivalences and channel it into inertia:
    * If people are wearing winter coats, then they won't show enough skin for the cars to be racist.  And if the cars aren't racist in cold places, then it isn't a problem in warm places.
    * People don't have radar/lidar either, and they're allowed to drive