In the Panasonic OXYRIDE SPEED CHALLENGE in Japan a soapbox type car reached
top speeds of 122km/h using 192 AA batteries.
The AA powered car is now in the Guinness Book of Records listed as the
world's fastest car using standard dry cell batteries.
The aerodynamic vehicle measures 3,3m in length and 0.78m in width and 0.56m
in height. The weight of the small electric car is 38kg.
More details and many
photos can be found on Watch Impress (Japanese).