A Toyota spokesman has suggested that the next Mk3 MR2 will be a hybrid, possibly out as early as 2005. My guess would be they'll probably stick an extra 50hp electric onto the 140 petrol hp already there. 0-60 probably in the 5s.
http://www.channel4.com/4car/news/news-story.jsp?news_id=10626&ref=archive

http://www.channel4.com/4car/news/news-story.jsp?news_id=10626&ref=archive