https://supergt.net/news/single/17624
DTM will do another demo run together with Super GT in Motegi, the drivers are :
Loic Duval (Audi RS5 DTM). He won 2010 GT500 championship.
Augusto Farfus (BMW M4 DTM). Did Suzuka 1000km with #7 BMW Team Studie at 2014,2016,2017
Maro Engel (Mercedes C 63 DTM).
So, expect all manufacturers from both of Super GT & DTM will participate on the demo run.