Kansas Speedway and several drivers plan to honor the victims of the Boston Marathon bombings during this weekend's NASCAR races.
The track is working with NASCAR on a moment of silence before Sunday's Sprint Cup race to remember the three people killed and more than 170 wounded in Monday's blasts.
Michael Waltrip, who ran the Boston Marathon in 2000, plans to honor them with special door numbers painted on his three Sprint Cup entries. The numbers will replicate the style of bib numbers pinned on the nearly 30,000 runners in this year's marathon. (AP)