The interior is also subtly revised for 2008 in the 5 Series. The interior materials have been upgraded throughout, with more extensive use of wood trim, new two-tone door panels and other detail changes. Most obvious in automatic-equipped versions is the new shifter, similar to the one in the new X5. The new adaptive cruise control features Stop & Go technology, which will bring the car to a standstill if traffic is heavy enough, and automatically maintains a safe distance from the car ahead, even in heavy traffic. There are also now six programmable memory keys for iDrive to help simplify its operation.