For the Formula Hybrid competition conducted in 2007 and 2008, the Formula SAE rules for each of these years were utilized for the construction of the car, with the addition of Hybrid specific rules specifying the type of fuel and the hybrid definitions. Also defined are details of a competitor car that might be in the developmental stage defined as ‘Hybrid-in-Progress’ car. A 'Hybrid-in-Progress' is an all-electric car, under the idea that next year the car will be upgraded to a full hybrid powertrain.