The research project auto.Bus - Seestadt is funded by the Ministry of Transport as part of the "Mobility of the Future" program. 
"Autonomous driving is a megatrend that has the potential to change cities sustainably.

If you are interested to see and to experience with the driverless bus, there will be a possibility to see and travel for short route (2.2 km).

Daily from 8:00 till 11:30 am  depending on weather condition.
Subway station : Seestadt (Line No. 2 (U2))

Link (in German):
https://www.wienerlinien.at/eportal3/ep/channelView.do/pageTypeId/66528/channelId/-4400525

Youtube-Video (in German) 
https://www.youtube.com/watch?v=NC3XWh2rTcs