I saw a bumper sticker for customtacos.com, and I thought, even if you could buy and sell customized tacos, why would it be done online?  That would imply shipping costs and time, which would definitely cut down on freshness, and all this in the name of custom tacos, which could be much more easily made with ingredients bought at a local supermarket. 

I went to the website and figured it out.  CustomTacos = Customized Toyota Tacomas.  Of course.  A taco is a pickup truck.  Everybody knows that.