Based on how the air intake/outtake works, it seems like it will be limited to a single "cylinder" for now so it's not a silver bullet that can replace a rotary

Based on how the air intake/outtake works, it seems like it will be limited to a single "cylinder" for now so it's not a silver bullet that can replace a rotary engine in something like the RX8. Edit: There are other features of this design that seem like they would limit how far it can scale. For example, the "crankshaft" is hollow to carry air for combustion. This surely limits how much torque it can handle vs a traditional solid shaft. Still, this is very cool and I hope they can overcome these challenges.