Dollar General, the nation's largest discount retailer with 10,000 stores, joined forces with Autism Speaks for the fourth time in 2013 to increase awareness of autism and raise funds for autism research and advocacy during Autism Awareness Month in April. Dollar General and its customers donated over $1,100,000 from its at-register campaign this year. In addition, the Autism Speaks puzzle piece logo appeared on Dollar General's NASCAR Toyota No. 20 car driven by Matt Kenseth in Richmond and Texas for the month of April to drive awareness for the campaign. More than $3.4 million has now been donated to Autism Speaks since this partnership started in 2010.