In September 2009 CEO Ian Clifford announced that ZENN was ceasing car production to concentrate on selling its drive-train technology to other manufacturers.

Valve regulated (low maintenance) lead-acid AGM cells were available at extra cost initially, then included as standard equipment in later models.

Powered by EEStor, the cityZENN was to have been rechargeable in less than 5 minutes, feature operating costs 1/10 of a typical internal combustion engine vehicle and be 100% emission-free at the point of use.

[4] Ian Clifford, CEO of ZENN Motor Company, also stated that a normal household outlet with 110 volt supply would fully charge the EEStor powered CityZENN in 4 hours, and a normal household outlet with 220 volt supply can fully charge the EEStor powered CityZENN in 2 hours.

The safety mark was granted after a report by the CBC[8] caused public outcry against the government's lack of interest in environmentally friendly alternatives to fossil fuel vehicles.

Since August 16, 2000, British Columbia has allowed LSVs on its roads, but this exception to the federal law was designed mainly for large, slow-moving farm equipment.

Although the ZENN was technically legal in British Columbia, the cars would have needed to be equipped with warning signs and yellow flashing lights to distinguish themselves as slow-moving.

After ZENN received its National Safety Mark, the province of British Columbia vowed to improve its support for electric vehicles.