 Complete the following phrase:  But the success in the long-distance races hid the shortcomings of the Lola chassis and Hall decided to take one last stab at car-building. He commissioned up-and-coming designer John Barnard to realize his vision of a new kind of Indy car based on the ground effect principle introduced on Colin Chapmans Lotus 78. The resulting Chaparral 2K, nicknamed the Yellow Submarine thanks to sponsor Pennzoils brand colors, changed the face of Indy car racing. The first Indy tunnel car dominated the 