 Complete the following phrase:  For 2021, Top Gun participated in a test at World Wide Technology Raceway in May, with Enerson driving the 75 Dallara-Chevrolet, which had a throwback livery to the Johnny Lightning-sponsored cars that Al Unser, Sr. and Vels Parnelli Jones Racing used to win the Indianapolis 500 in 1970. Following this, they officially entered the 