It will be ready tomorrow.

I use G-wagon as my reference, but I higher all chassis system because SimplePlanes terrain is not friendly XD angle too sharp!
It is a front (Double Wishbone) rear (Torsion Beam) suspension system, and I add two jet engines and 4 wings to get more downforce, so it could stick on the ground more easily (I didn't put too much power for realistic)

I am working slowly right now.

On Thursday I feel my top belly is really hurt, and it is none stopping pain. I rush to A&E and I think I might have Gallstones T T, it is by my father's family gene; 7/10 of my family members have it. Hope for the best, I need more test from GP.