well, damn. I didn't know I wanted to find an aluminum (they existed? !) milk truck to make into a gourmet food (breakfast burritos and omelets, that's my thing) truck until now

 

http://progress-is-fine.blogspot.com/2022/05/its-alive.html

FYI, Mercury Aircraft made aluminum busses http://justacarguy.blogspot.com/2018/08/a-super-rare-mercury-aircraft-all.html