The singing superstar added her John Hancock to this Eco 300 for charity. The car will be auctioned off and sold to benefit Haiti. I don’t know how much a signature can increase the price, but Kudos to all for doing something good:

The white 300, dubbed “Ecostyle” was designed by Christina Aguilera with features a water-based Vanilla, cactus-colored seat-inserts and bamboo applique placed on the door trim and center console (all sustainable materials). The car is to be auctioned to benefit relief efforts in Haiti.

