From the official Press Release:

The highly configurable, high-tech interior provides ultimate urban utility from the outside in.

Sliding front doors with a space efficient design let people enter and exit in tight spaces.

Despite the compact exterior dimensions, the interior can contain large amounts of band equipment, sports gear and other bulky items.

“Following the traditional Honda theme of ‘man maximum, machine minimum,’ the Step Bus seeks to create the largest possible interior with the smallest possible exterior,” said John Mendel, senior vice president of American Honda Motor Co., Inc.

“This innovative concept vehicle shows how large functionality can easily exist within small vehicle packages.”

The Step Bus Concept is a product of the Honda R&D Co., Ltd., Wako design center in Saitama prefecture, Japan.

Purely a styling concept, the vehicle uses a mid-engine, rear wheel drive platform with a small displacement power plant.

The 5-passenger interior features modular construction with a spacious interior. The modular construction is highlighted by tracks in the door that can hold beverage containers, cell phones and more.

Advanced technology includes a next-generation navigation system. The tall body provides room for a ceiling-mounted storage tray. Painted in light green metallic, the body design embraces a bold vertical architecture style that creates a large presence within a small space.

(Source: Honda)