By Bob Pockrass
FOX Sports NASCAR Writer
A successful experiment at the Los Angeles Memorial Coliseum and a relatively successful debut of the Next Gen car have NASCAR brass optimistic about the remainder of 2022 and beyond.
NASCAR entered 2022 hopeful but with plenty of unknowns, starting with the exhibition Clash on a temporary track constructed inside the iconic L.A. stadium. The car, with parts and pieces now provided primarily by…