Half bicycle, half tiny car: the ELF by Organic Transit was one of the first solar vehicles that ordinary people could actually buy and ride every day. The name stands for Electric, Light and Fun — and that is exactly what it is.
The ELF was created by Rob Cotter, a former engineer who had worked on racing projects for Porsche, Mercedes-Benz and BMW before moving into the human-powered vehicle scene. His idea was launched through a Kickstarter campaign that raised more than $225,000 from 547 backers, and production started in Durham, North Carolina in 2013.
The body is a lightweight, weatherproof shell on a three-wheeled recumbent chassis. On the roof sits a solar panel — 60 W on early models, 100 W as standard later — feeding a lithium battery that powers an electric assist motor. Parked in the sun, the panel can bring the battery back to about half charge in a day; plugged into a wall socket, a full charge takes around two hours.
On battery alone the ELF covers roughly 30 miles (≈ 48 km); combine motor and pedalling and the range stretches much further. Assisted speed is up to about 20 mph (32 km/h), and there is cargo space behind the seat for shopping.
Because it is legally classified as a bicycle in all 50 US states, the ELF needs no licence, no registration and no insurance — and you can use bike lanes. For many builders in our community, it was the first proof that a practical, enclosed, sun-charged vehicle for daily errands is not science fiction.
Technical data
| Builder | Organic Transit, founded by Rob Cotter (former Porsche, Mercedes-Benz and BMW racing engineer) |
|---|---|
| Type | Enclosed three-wheeled recumbent velomobile with electric assist |
| Solar | 60 W roof panel (early models), 100 W standard later |
| Motor | 600–750 W permanent-magnet motor |
| Solar charging | About half a battery in ~8 hours of sun (60 W panel); ~2 h on a wall socket |
| Range | ~30 miles (48 km) electric only, more with pedalling |
| Assisted speed | Up to ~20 mph (32 km/h) |
| Legal status | Bicycle in all 50 US states |
| Price at launch | About ,000 |
Photo: Ian Irving / Wikimedia Commons, CC BY 2.0
Sources: New Atlas · BikePortland · Electrek