First, minivans went from three doors to four doors. After that, pickups added a third door, then a fourth.
A six-door sport-utility. General Motors is stretching its biggest sport-utility and adding two doors.
No, the vehicle won't look like the stretched airport limo of the past, but the wheelbase will be increased a bit. The two extra doors will be small, similar in function and size to the suicide doors common on extended-cab pickups. The extra doors will be between the second, or middle, door and the wheel well on each side and only will open if the second door is opened.
Sources say the six-door model will debut for the 2002 model year. It's not clear whether it will be branded a Chevrolet Suburban, a GMC Yukon XL, or both. The extra doors will offer easier access to the third seat and separate the GM offerings from other sport-utilities.