I created a reference image for the cheats that you can activate in DD64 in the Guides section. There's one cheat code (C-Left -> A -> C-Left) that's not included in the image because nobody knows what it does, if anything. The flag was discovered with the rest of the cheat flags and apparently can be activated.

Also, I'm very tempted to do time trials with the monster truck mode active. It changes the driving physics because of the extra suspension (no slowdown from road defects but high center of balance), so it'd interesting to see how different it'd be. I'm not asking for a separate leaderboard for it though! Just a curiosity I'd like to explore.

I thought about doing a monster truck run for a april fools. If you decide to do one I'd be interested in trying it.