With two years and $20,000, retired winery engineer Dave Orton turned a Ford Transit into a completely off-grid van home that sleeps two, sits four, and includes a toilet, kitchen, and indoor shower.
Adding 80/20 aluminum extrusions to a stripped-down transit van, Orton built up a kitchen unit with two fold-out tables (one indoor, one outdoor) and a bedroom/living room where all furniture can be removed to haul cargo. The toilet room converts into a shower.
Orton designed an electrical system that provides adequate power without needing shore power or a generator to keep the house battery charged.
https://www.ortontransit.info/
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