Yes, ketchup. Volkswagen produce in-house curried sausage for their workers and to go with that their own spicy ketchup made for them by Kraft Foods since the '70s.
In 1997 they began officially bottling and selling 'Spiced Ketchup'. Now for 2010 they have made 1000 bottles of 'Volkswagen Classic Ketchup' for the 2010 Techno Classica Essen Trade Show to celebrate 40 years of Volkswagen Ketchup :-)