I don't have P85D, so this does not concern me. But I feel Tesla should give P85D owners free ludicrous update, because they did not get what was advertised. Tesla is now offering this update to them with 5000 USD + work. But what if Tesla would offer it for free? Of course it would cost them a lot, but in the long run I believe it would be wise. Think about the headlines "Tesla offers free update to current owners". Good publicity would be huge. Current owners would praise the company.