FORD 2009 Flex v.2 - Manual (Page 131)

WARNING: Loaded vehicles, with a higher center of gravity,
may handle differently than unloaded vehicles. Extra
precautions, such as slower speeds and increased stopping distance,
should be taken when driving a heavily loaded vehicle.
2009 Flex (471)
Owners Guide, 2nd Printing
USA (fus)
Driver Controls
131