According to this (and a decade ago), the answer is
The current 7-Series BMW and S-class Mercedes boast about 100 processors apiece. A relatively low-profile Volvo still has 50 to 60 baby processors on board. Even a boring low-cost econobox has a few dozen different microprocessors in it. Your transportation appliance probably has more chips than your Internet appliance.
(This NYT article from 2010 yields the same number.)
I suppose the answer to Apple's situation: the iCar.