User blog comment:IFresternoch/ v6.3 Team Autocross Annihilation challenge/@comment-31533585-20180706114209/@comment-27364854-20180706183350

The problem is most of the challenges only the top 200 teams are rewarded with 200/300 gold. In that case it is nearly impossible to solo, even if you want to try to stay up for 25 hours straight or have the time for it :v

A major factor about the challenges itself is it depends on how many people decide to go for it. Sometimes it may take even less time, which is very rare, sometimes more, which is most of the time. Also, remember that sometimes in-game goals give you 20/40 gold when you reach it, like the +20 in the post above, which is also good. I would say this challenge, even with one of the fastest autocrosses in the game that gives me an edge over most people "going for it", needs at least 13 hours, so it is very likely that other challenges are more time consuming.

Even 5 dollars per hours is below minimum wage xd