According to Disney & More
Quote...HKDL apparently has closed Autopia forever as they intend to use the land for new attractions. HKDL Autopia cars were also the first ones, if i'm right, to be entirely electric - so, no pollution - and if Autopia becomes an extinct attraction a good idea could be to send them all at Disneyland Paris Discoveryland where i'm sure they will make good use of them at DLP Autopia..
Quite a surprise, if memory serves me right, Autopia was the first attration post-opening to be added to the park in '06.