"In 2000, the ZF 6HP26 was the first six-speed automatic transmission in a production passenger car. Released by ZF Friedrichshafen AG in 2000, it was manufactured by ZF Getriebe GmbH in Saarbrücken, Germany" (WIKIPEDIA.com).
A joint effort in 2002 yielded GM and Ford their own versions of a new 6-speed automatic for front-wheel drive vehicles. As a result, the 6T70 transmission was introduced by General Motors and the 6F model by Ford Motor Company. Joint development from competing motor companies is not an uncommon practice. Legally, competing motor companies can design jointly but must manufacture separately. It also reduces costs for each company by hundreds of millions of dollars.
Chrysler launched their own assault on the automatic transmission arms race in 2007. The 66/68RFE (RWD) and the 62TE (FWD) were designed with the intention of increasing full efficiency and improving performance.
|GM's Rear-Wheel Drive Six-Speed Auto (6L90e)|
|Chrysler's Rear-Wheel Drive Six-Speed Auto (68RFE)|
These transmissions are a technological dream, but from a repair standpoint, are sure to be an economical nightmare.