Porsche

1948: Porsche's first car had a 1086cc 30kW VW engine.
1964: Porsche 911.
1981: Porsche showed the Porsche 911 AWD concept car at the Frankfurt Motor Show.
1984: A Porsche 911 AWD won the Paris Dakar rally.
1986: Porsche 959 AWDs finished 1, 2 and 6 in the Paris Dakar rally.
2002: A Porsche SUV(!) - the 4x4 Porsche Cayenne - developed in conjunction with VW (the VW Touareg).
2007: Porsche seemed to gain effective control of VW buying 31% of the latter's shares and successfully challenging a German law limiting VW shareholders to voting at most 20%. But, financially, Porsche had bitten off more than it could chew.
2009, May: VW and Porsche decided to merge. After a hard battle, the VW and Porsche boards agreed to Porsche being absorbed into VW (23/7/'09), VW to take 42% of Porsche AG by the end of 2009 (13/8/'09); then 49.9% (7/12/'09).
2012, August 1: Volkswagen and Porsche finalized the creation of their "Integrated Automotive Group."