This excerpt taken from the SAH 8-K filed Nov 3, 2005.
10. EMPLOYEE BENEFIT PLANS
Substantially all of the employees of Sonic are eligible to participate in a 401(k) plan. In accordance with the formula in the 401(k) plan agreement, contributions by Sonic to the 401(k) plan were $4.0 million in 2002, $3.8 million in 2003 and $4.1 million in 2004.