What is this?

[83ATC185]

I don't think i've ever a 3 wheeler like this before.
https://wausau.craigslist.org/rvs/4843030339.html

[Lord Letto 20]

looks to me almost like a cross between a homebuilt and a Tri-Zinger?:confused:

[SteveCZ28]

im with lord on this one. its definitely some sort of homebuilt add on type deal