More than 100-thousand people are expected to fill the Las Vegas Motor Speedway for Saturday’s Sam’s Town 300 and Sunday’s Kobalt Tools 400. The Nevada Highway Patrol has some advice for NASCAR fans — come early and leave late to reduce traffic headaches. Drivers with smart phones can get an app for the latest traffic information at lvms.com. You can avoid driving altogether by using the public bus system or shuttle buses that leave from several Strip and downtown resorts. Another alternative is flying to the speedway via helicopter but a round trip will set you back 500 dollars.