Besides this being a really funny title for a challenge I have no video for you this time but a photo I took in stead. It is a pretty straight forward challenge but even so I will try to explain how I got the 2 stars required:
Facing the danger sign from inside the construction site I turned the car around and went the opposite way as far as possible in a more or less straight line avoiding a big puddle and a little hill. You can also reverse all the way back but that is a bit more time consuming.
Here is the view I had before I made the run. If you have eagle vision

you can see the danger sign flags above the car in the distance. A few meters behind me is a wall:
When you start the run go a bit to the right to avoid obstacles then back left.
I did not modify the car for this jump (a part from a go faster skin

). I don't think you can besides rims and tuning. I also tried the jump from the other side of the danger sign but that was too problematic and time consuming so I gave that up pretty early.
Good luck

Note: I uploaded a rather big photo (1350x759) which this site has reduced in size.