This company has conversion kits for a Geo Metro at $5000 to $9000 (which does not include the initial vehicle cost).
Electric Geo Metro
Again I need to look at the math behind the conversion.
Batteries are $300 to $800 per year according to one article.
I am starting to lean more towards a junkyard Toyota Prius or Hybrid Civic (fixable) with the conversion kit to add batteries and a controller.