Ever watch Initial D the movie?

If you did you'll remember the part where the father hands the kid driver of the Ae86 a cup of water and tells him "If you spill a drop I'll kick your ass"

He makes his tofu deliveries and drifts with the cup of water and dose not spill a drop.

I say the Cup challenge should consist of a 8 oz cup secured to the top of a 1/10th scale shell with the cup filled half way with water.
The cup should be marked to show the current level before and after the drift.
The drift session should last no more or less than 3min30seconds with no stopping. stopping = -2 points
Driver should demonstrate both tight drifts and sweepers. Driving too slow or not demonstrating abilities = -3 points
Spilling small amounts of water = -5 points
Spilling all or majority of water = -10 points

Total points before challenge = 10 points

This is open to more refinment, but for now thats my rough idea
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As for cheating/video editing, we need to implement some kind of challenger appeal system so the juges can review the information and decide if the video was edited or if there was some cheating in case one of the participants believes a winner may have edited video in order to cheat.