Daihatsu Kayoibako-K
At the Japan Mobility Show 2025, Daihatsu introduced two new kei car concept — the Kayoibako-K.
The original Kayoibako concept, whose name comes from modular shipping containers, debuted in 2023. This year, Toyota presented an updated version, signaling that a small commercial EV could be inching closer to production.
Toyota’s lineup included cargo and autonomous shuttle versions of the Kayoibako, as well as a larger HiAce concept shown in standard and high-roof configurations. But perhaps the most interesting addition was the Daihatsu-branded variant, perfectly proportioned for the kei segment.
Explaining the concept, Toyota President and CEO Koji Sato said:
“Just as cardboard boxes come in different sizes, so does the KAYOIBAKO. From extra-large to small… Daihatsu will make the small boxes, and Toyota will make the big boxes.”
The Kayoibako-K adopts the same minimalist, boxy styling as its larger siblings, with clean lines and a practical, upright profile. Its LED headlights sit within a covered grille, giving the front end a friendly, almost expressive face.
A single sliding door provides access to the cabin, while the rear remains simple and functional, featuring low-set taillights and a flat tailgate topped with a narrow rear window.
Staying true to kei car dimensions, the Kayoibako-K measures roughly 3,400 mm (133.9 inches) in length. The light commercial version includes a single driver’s seat, a floating dashboard module, and a flexible cargo bay supported by an AI system optimized for last-mile deliveries.
A camper variant also joined the showcase, complete with a pop-up roof tent, rear ladder, retractable awning, and folding outdoor furniture. This version featured “Woodland” graphics, chunkier off-road tires, and a roof-mounted LED light bar for added versatility.
With no visible air intakes and a charging port positioned on the nose, the Kayoibako-K is almost certainly an all-electric concept. Daihatsu hasn’t confirmed production plans yet, but it’s easy to imagine the model eventually evolving into a modern successor to the Atrai kei van — which was also displayed at the show in electric form as the e-Atrai, turned into a mobile sticker workshop for kids.
