Here is a tip, taken from the California Driver Handbook, related to air bag safety. You may want to pass this along to your fleet drivers. 

An air bag needs about 10 inches of space to inflate. Ride at least 10 inches (measured from the center of the steering wheel to your breastbone) from the air bag cover, if you can do this while maintaining full control of the vehicle. If you cannot safely sit 10 inches away from the air bag, contact your vehicle dealer or manufacturer for advice about ad­ditional ways of moving back from your air bag. 

Passengers should also sit at least 10 inches away from the passenger-side air bag.