 Prototypes were manufactured at the Subaru Technical Research Center in Mitaka, Tokyo, and were scheduled to be delivered to TEPCO between October 2005 and March 2006.The delivered prototypes received intense interest from electric vehicle fans owing to their modern lithium-ion battery technology, appropriate size, and potential performance attributes.The R1e was exhibited at Detroit in January 2006, billed as "the ideal ecology car" and touting its use of a lithium-ion battery pack, featuring rapid charging and low maintenance.