It is an opposed piston style of engine https://en.wikipedia.org/wiki/Opposed-piston_engine the Soviets/Russians used this style of engine back in the 1960s on the T-64 and other AFVs based on it. It wasn't the most reliable engine in the world, but got better as time went on  

With 4 wheels, it would have to meet automobile safety & emissions standards. If it had only 3, it would be a motorcycle and subject to easier compliance regs.

This is the type of stuff Ford wastes time on internally. It’s one of the most exhausting things to watch on a regular basis.   I wish they focused more on the more important items like quality instead of marketing/naming things like this.   The MY26 Explorer Tremor will literally be exactly like the Explorer Timberline was except with the MY25 Explorer refresh updates. I think it’s keeping the same wheels but with the Tremor accents added etc.   I think the Tremor will use the regular Explorer’s front and rear fascia’s except with the Tremor accents added and a unique grill insert. This is a cost savings as the Timberline had its own unique front and rear fascia’s entirely. Multiple powertrains might be available as well.    

Interesting how even Henry I was letting products languish way back in the 1920s.  I was also shocked at how bad the executives were and how badly it was managed before Mulally.  How did Bill Ford let them get away with it for so long?

OK, semantics, but still not sure most people on this forum would call these vehicles a car, though I anticipate I could have a lot of fun with either.  😀   For what it’s worth, potential for affordability probably rivals motorcycles, though I feel more practical, useful, and probably much safer than a motorized bike.  The VW only had 5.3 kWh battery size, range of 40 miles, and 80+ MPH top speed; not bad for 15-year-old technology.  The Audi version may have had larger battery.  I know there is a name for this class of vehicle, but at least in case of VW not sure it applies because it was designed for higher speeds and to greater safety standard.  

Yeah, I don't know why they moved the Expedition/Explorer to those names now.   It's like they undid one thing and redid another.

Me too - I'm about 3/4 through.   Interesting to see similarities between now and then.   Product was one of the main keys.

Stupidest trim name ever.

Well the base trim Explorer is using the Active Name like the Escape, so 

I think you just described a car.