GMT is GMT. You can register more than 2 drivers. I'll do some more research on what the minimum wheel time each will be required. That will be the limiting factor. For now we are just doing this 1 hour event to test swaps and work out bugs. Also so everyone can learn SimHQ server etiquette and procedures. When the 6 hour race sign up thread is ready we'll have the particulars hashed out. Is like input from Noel and others who have experience with driver swap faces over 4 hours long. I have experience with 3 hour iron man races but not swaps.