On that particular jump I don’t think it’s possible without cheating because there’s a lot of sand banks and road bumps before the jump, it’s pretty hard to approach the ramp at a good speed.
If it is in fact possible, certainly the person used an X-Class car.
I used an Ariel Nomad that had been upgraded. Took less than 5 minutes to hit the 3 stars again. I had plenty of speed, just had to rewind and adjust my point of entry a few times.
This jump is perfectly doable, in a previous forzathon you had to do it in Mercedes G 65 AMG, a four wheel drive tank. Just fully upgraded and lightening, find the right line no problem.
Also did it in a fully upgraded ford 32 coupe got over 200 m with that.
Use either the don song tuned centrino or the local motors rally fighter. I think it even has a danger sign tune, max it to 855 or something. Both destroy all jumps