 On January 16, 2007 EEStor, Inc. announced plans to ship 15 kilowatt-hour Electrical Energy Storage Units
(EESU) to ZENN Motor Company by end of 2007 for use in the ZENN electric vehicles.In a July 2009 interview, CEO Ian Clifford stated that EEStor anticipated "delivery of production prototype EESU to us by the end of 2009".The cityZENN was a planned fully-certified, highway-capable vehicle with a top speed of and a range of .