Listed below are all the Nations signed up so far, and below this is the link to see the other info of the Nations status.
BGR - Bulgaria
DEU - Germany
LAT - Latvia
LTU - Lithuania
ITA - Italy
FRA - France
TUR - Turkey
CAN - Canada
BEL - Belgium
SRB - Serbia
UK - United Kingdom
EST - Estonia
POL - Poland
FIN - Finland
USA - United States of America
SVK - Slovakia
IND - India
NOR - Norway
ESP - Spain
NED - The Netherlands
PRT - Portugal
CZE - Czech Republic

To see the drivers info, Team Manager etc, check here.

No AUS

Quote from JPeace :

Does Australia have at least 2 drivers that can drive? If so, sign up!

I guess they would if the starting time of the events wouldn't be 2/3 o'clock their time at night