Hello everybody!
One of the features this game will have is online multiplayer. The development of such feature is probably the hardest part of making it, though! I'm working as fast as possible to make this available (at least in a basic state) during Early Access launch, but there's a possibility that it'll be added in a patch.
So, what to expect? Phase 1 or online multiplayer is synchronized matches in a local network, although there are ways to play with such a connection with people over internet. "True" online multiplayer, as in seamless matchmaking, will come in Phase 2. Note that it'll still be iterated and perfected over the course of the Early Access phase, and it should be completely stable by the end of it.
That said, there are a lot of online functions that are still in the air, such as leaderboards for the Time Trial mode, custom matches, etc. Just hit me up with your ideas, suggestions, etc. I'll be glad to hear them out!