Looks like something out of Mad Max or Water World. It sounds like a hoax just by the fact - why didn't the guy just fix the car instead of building a motorcycle? Also, don't think he followed the desert survival guide (1):
"Stay as hydrated as possible before going out.
Take along food that packs the most nutrition in the least size and weight.
Wear wicking fabrics with a UPF of at least 30 as a base layer, and take along one warming layer (wool or fleece) and one windbreak layer.
Many deserts are prone to dust storms - protect yourself.
Travel at night when possible.
Try to stay as warm as possible at night.
Be wary of nocturnal animals that can harm you."
Typically you are meant to stay with the vehicle.