Even when selling cars for 35,000$ or more the progress bar of the ‘Premium Production’ achievement won’t fill.
The situation: Have build up a single production line that will provide cars of the same configuration - all available upgrades are done.
Premium_Production-achievement.zip (466 KB)
The pricing is (because of a single configuration) always 35,032$ per car.
Because of the high price the cars are sold periodically (that’s okay so far) …
… but even after hours (w/o quit’n’load) the progress bar of the ‘Premium Production’ achievement remains empty.