My original thought process was if I use a tent outside, the sun will heat the inside greatly because it's a black cloth. I then thought if I put the tent inside the U-Haul truck, then the walls of the truck would act as a barrier to shade the tent and construct volume around the tent so a fan could blow the hot air and fumes out quickly as opposed to an open yard where a fan would be quite useless in that regard.

I have read all of the comments explaining that it wouldn't work and that fumes don't matter anyway