A designer and an engineer have unveiled the Number Nine Works Sweep 9, a street-legal demo version of the discontinued Tommykaira ZZ EV [1, 2].
The project represents a revival of the ZZ concept through a specialized facelift. By transforming a defunct electric vehicle model into a functional street-legal demo, the creators are testing the viability of boutique EV restorations and modifications.
The Sweep 9 is designated as a 2026 model year vehicle [2]. It was developed by a reunited pair consisting of one designer and one engineer who sought to update the original Tommykaira ZZ platform [1, 2]. This collaboration focuses on bringing a modernized aesthetic and legal road compliance to a vehicle line that had previously been discontinued.
Reports said only one unit of the Sweep 9 exists [1]. The vehicle serves as a proof of concept rather than a production run, showcasing how specific engineering changes can breathe new life into an abandoned EV project.
Because the car is a singular demo unit, it remains a rarity in the automotive landscape. The project highlights the niche intersection of electric mobility and bespoke automotive design, a space where individual engineers can iterate on existing platforms without the constraints of mass production.
While the Tommykaira ZZ was originally intended for a broader market, the Sweep 9 operates as a specialized study. The street-legal status of the demo ensures that the engineering updates are not merely cosmetic but meet the regulatory standards required for public roads [1, 2].
“Only one unit of the Sweep 9 exists”
The emergence of the Sweep 9 suggests a growing interest in 'restomodding' electric vehicles, where designers apply modern aesthetics to failed or discontinued EV platforms. While a single demo car does not indicate a market trend, it demonstrates that the technical infrastructure of discontinued EVs can be repurposed for high-end, low-volume automotive art.
