Straubel, an electronics wizard who rebuilt a salvaged golf cart before he had his first car, says he doesn't see a major leap in battery technology in the near future and is skeptical of such claims circulating the industry. "People love to latch on to this great next idea but historically that's not how it happens. The reliable, tested technology gets better one step at a time." Straubel says low-cost performance batteries are holding back the development of retro electric conversions on existing vehicles. "There are hundreds, maybe thousands, who are very interested and will continue to convert all sorts of cars. The challenge is, where do you find a good drive system? Where do you get a high-performance battery? I think people will continue to convert to electric vehicles but they'll be shorter range and lower performance."