EBT Card

I've got to get me one of those Electronic Benefit Transfer (EBT) cards. Last winter in Lake Havasu, I watched a lady pay for her items with an EBT card and then walk outside and get into a new Cadillac Escalade. Today, the lady in front of me used her EBT card and then got into a late model Mercedes-Benz. Does anyone know if you can choose which luxury automobile you get with your card or do you just have to take what they give you?