This may be the only work that people see Samuel do throughout the weekend, fill up the fuel cell with race fuel. However, what you don't see is he and crewchief Joe Oplowski pouring over the massive amount of information collected by the two data logger systems. One is the RacePak that reads and records about 20 different sensors and the other is data from the Mustang's F.A.S.T. fuel injection system. The team makes clutch and engine adjustments based on the data.