NASCAR's debut on a temporary track inside the Los Angeles Memorial Coliseum two years ago was a bold experiment that featured a pre-race show by Pitbull, a halftime performance by Ice Cube, a rowdy USC student section and some pretty decent racing. NASCAR tried for another hit last year with a second Clash at the Coliseum and it wasn't the same. The racing was unwatchable, enthusiasm for the event had slipped after only one year and the Clash came off as simply an excuse for NASCAR to maintain a presence in Southern California.