These folks are pals of mine.

Li-Ion is what all EVs will run eventually. It's inevitable. :^)

From: Dan Rivers

It was very, very close, but we set the new record at 15:18.64. The CPI ER2 racer, using only 254 lbs (115 kg) of LG Chem produced lithium-ion polymer batteries, spun out twice, losing energy and momentum, but got back in the race at reached the top with about 2% of its energy left. Our radar time at Glen Cove was 89.2 mph, uphill going into a hairpin turn.

More about: CPI Electric Racer sets new record on Pikes Peak

Here is a link to the Compact Power Web page that has nifty pictures of the car and some specs.
http://www.compactpower.com/racer.html