Use the tutorial in the game if you are new. This game doesn't work on phones and iPads since you need keyboards any device with a keyboard and only 2 scratchers can race online at a time as soon as their race is over or 1 of them leaves then you get in you need to be a registered 'scratcher' to use race online mode. If someone is racing online with you and he leaves and joins again or someone else joins he will not able to see which car you are using but he will see a one of the cars which you may or may not own. Reasons for not able to race online: You may not be a scratcher Someone else may be currently racing on the track no one is currently playing so you have no one to race with.
Thanks to shayan-bulsara for the original project.