just spoke to toyota australia. the american version in the video is different to the australian model. the usa model has decided to use the older style nickle metal hydride batteries and they left the battery in the boot in the usa version, thus the electric motor performance is different.

the japaneese and australian release is the only cars to have the new lithium console mounted area battery and thus the speed whilst in electric is different and provides faster speeds. thats where the 20 klms per hour versus the aussie 50 klms per hour comes in.