I found the Ultimate Overland Prius Build at Overland Expo West 2021!
This thing is unreal, it has EVERYTHING and this guy is so cool!
He also sells The Camping Box, which you see in this video.
If you want to check Jonathan out on Instagram or YouTube, I have put links below.

IG: Kramer_Junction
IG: the.camping.box
IG: priuscamping
YT: @JonathanCWard

Kramer Junction Amazon Shop
www.amazon.com/shop/kramer_junction