From time to time, Uber will offer something called a “quest”, and that is when they will say, “If you do 30 rides in the next 48 hours, we'll give you an extra $40.” However, it's the carrot on the stick, because if you don't get all 30, you get nothing. At the same time, you're incentivized to get your trip count up, so you will take the cheap ones just to get your trip count up.
On December 3rd, 2024. See this statement in context.