Expandable City Cars

Daniel Julier's 3Wheeler Has a Collapsible Rear Seat

In the typical urban commute, it’s one person per car. Single-seater three-wheelers thereby dominate most city car designs. Daniel Julier's '3Wheeler' speaks to this three-wheeled design, but adapts it into a 1+1 concept, which means in a pinch you can jam another person in the rear, erm, rear seat.

The single rear wheel opens up some room that can be used for a small storage space as well. The '3Wheeler' is meant to be powered by hydrogen, but it can also capture energy while going downhill to be used when going uphill for a boost.

Expandable City Cars
Innovative designs that allow for additional passengers or storage space on a compact city car.
Single-seater Alternatives
Creative approaches to individual mobility, including single-seater vehicles optimized for urban travels.
Hydrogen-powered Vehicles
Innovations in hydrogen fuel cell technology that offer eco-friendly solutions for transportation.

Who This Affects Most

Automotive Industry
Innovations in car manufacturing and design, with a focus on smaller, more efficient, and eco-friendly vehicles.
Energy Industry
Developments in hydrogen fuel cells and energy regeneration that could power the next generation of cars.
Urban Planning and Transportation
Creating sustainable and practical solutions for urban mobility, including shared transportation and alternative modes of transportation.
SCORE
4.2 out of 10
GENDER
70% Men30% Women
MARKETTop markets: North America, Europe
GENERATION
  • Gen Z
  • Gen Alpha
  • Gen X
  • Millennial (primary audience)
POPULARITY
Popularity 22%
Activity 96%
Freshness 8%

Solutions for innovators working at the edge of change. We help transform emerging ideas into practical, durable solutions by combining strategic thinking, creative exploration, and hands-on execution.

Trends © 2026 Trend Hunter Inc. All Rights Reserved.
LinkedIn Instagram X