[bane]

Anecdata: It used to be an almost perfect predictor in my social circles that people who owned a VW also owned lots of Apple gear. Two different people I knew where both VW enthusiasts AND Apple iPod collectors (these two things used to also be strong predictors of several other consumer habits coincidentally).

It's a good match in terms of synergy, but I don't see it doing much to grow the customer base of either company even if it might grow the revenue per customer. A term I've used for it in the past is "choir mining" where you keep squeezing your existing customers.