Maybe not (really) related to FIA R4, but this one relates to AP4, another alternative to R5, and this made me surprised.
There are some rumours in Indonesian rallying that one - estabilshed - rally teams are designing Mitsubishi Xpander AP4, which the base comes from the MPV car itself.
Previously they planned to build Mazda 2 AP4 after their visit to Australia/NZ, but it didn't happen because their ties with Mitsubishi

Hybrids were the fault of the green agenda, not because anybody in rally wanted it. Paris Agreement was signed in 2016, Todt's WEF luvvy Calderon barged in to a climate position at the broke FIA,...
WRC mainclass from 2027