It must be really difficult for drivers who are in a top car, but then get moved to a car that's further back on the grid. I don't know how they maintain their motivation. Bottas will be an example next season, but it happens plenty of times. Vettel is perhaps the most notable of the current drivers, or maybe Alonso. It must be frustrating for these drivers to see worse drivers overtaking them simply because they have better cars. Of course we can say that the best drivers will always gravitate to the best teams, but it isn't always the case because with only 2 drivers per team, and multi-year contracts, it's rare that a space opens up.