Using Sat Nav is safer

The good people at TomTom have published a study that claims using sat nav is safer...it states that:

• improves driver behaviour when driving through an unknown area
• heightens awareness and reduces stress
• people who use a sat nav have 12% less damage claims
• reduces miles driven by 16%
• reduces travel time by 18% when driving through an unknown area

largely i concur with this, I use a Garmin, so i guess the same is true for that product.