BMW was supposed to unveil its first ever hydrogen fuel-cell EV at January’s Detroit Auto Show, yet it now appears that it has pulled it out of the venue without explanation.

Apparently, it was meant to show off tech that’s more advanced than what current cars like the Toyota Mirai are using.

BMW Blog says it has information that this is the case, but that the automaker is bound to re-announce the concept for a later motor show.

Last time BMW showed off a hydrogen-fueled concept was back in 2007 when they had the “Hydrogen 7” (pictured). Before that, they had 2004’s H2R Hydrogen Racecar.

Perhaps they’ll also use the occasion to reveal the new 7-Series – maybe the prototype bits are installed in the new flagship model which coincidentally is also due for unveiling sometime in 2015, at the Frankfurt motor show.

Photo Gallery