The E65/E66/E67/E68 model replaced the BMW E38 for the 2002 model year. The car was unveiled at the Frankfurt Motor Show in September 2001, and was launched in Europe on November 17, 2001. It first appeared in the USA and other markets in the spring of 2002. E65 was the designation of the short wheel base version of the automobile, E66 of the long wheel base version, E67 of the bullet proof version and E68 of the hydrogen version. The E65 generated much controversy, due to its radical styling and iDrive user difficulties, so customers rushed to purchase its predecessor, the E38, before it was discontinued. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2006 facelift.