For reference, my 1/5th scale could push the hoop around the course and even turn corners dragging it, but I wouldn't count on that working every time.
I believe even for an rock climbing truck at like 1/10th scale the wall is not passable. I used brute force to ramp over it, but it was very risky. The risk of damage to my rover was way too high. Rover caught something the last time I went over, and flipped upside down. It was ramming speed from that moment on! Fun fact, I actually hit the barrels much harder during testing... slowed down for competition. Also, I had a lot of damage to my rover during testing at home from hitting barrels. It's hard on parts!
If you want to see the wall, look at the following video. https://www.youtube.com/watch?v=TEP8B8YMi6w
I'm sure there are other videos that shows it well. If you try to go over the wall, be prepared for them to rotate it 180 degrees at some point during competition. (Relying on a route over could backfire).