Ford apparently has it working in the Bronco Basecamp-it has a 1.5L I4 EREV in it.   I think the bigger issue here is how well it is going to work when it comes to towing, which is going to be the big issue with a truck.   The 3.6L works fine as ICE alone, but with it lugging the extra battery weight around, well I'm guessing that is the problem or they can't get the electrical gremlins worked out like they had with their hybrid products. 

Till the CAFE crows come home again. 

I'm gonna guess that the Fathom front end is going to have a front end similar to the Bronco Basecamp/Dodge Charger where it looks larger then it is visually, but is opened up through the hood to cut down on the frontal area see photo for what I'm talking about

Its being called the Bronco Basecamp in Australia   https://www.ford.com.au/suv/bronco/   One interesting thing is they are calling the EREV step a Super hybrid 

Oh absolutely get what you’re saying, imagine the Super cab bed on the crew cab and the 8’ Single cab bed on the Supercab..    

Yes.  HRG

No

https://www.ford.com.au/suv/bronco/?fbclid=IwY2xjawUNjilwZG9mAWV4dG4DYWVtAjEwAGJyaWQRMXRLZXhCcThEM0p5eEtUT3hzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEekJXjpNYMm21OJyvekjzmWFWLL7pzSDpwgEaq7UVp1EfWZMdsjZaLhrVBML4_aem_jLYytBsdWJ4gjD1p-1sKQQ

Another rendering for the Fathom.     https://topelectricsuv.com/news/ford/ford-fathom-electric-truck-rendered/ 

Ford Patents May Have Accidentally Revealed the Next-Gen Bronco?     A pair of patents filed by Ford may have just given us our first look at the next-generation Bronco, which is expected to start production in late 2029.  The patents include detailed drawings of an unnamed SUV that looks suspiciously like a redesigned Ford Bronco.  One patent details clever sleeping arrangements (both inside and on top of the SUV), while the other shows a modular storage system for removable door panels.   https://www.caranddriver.com/news/a73642098/next-gen-ford-bronco-patents/