And a growing number of people worldwide own smartphones, which add Web surfing, apps, games and GPS-mapping to the list of diversions available to phone users in the driver's seat.

CNN: Will your next car be a smartphone?

"Verizon Wireless continues to add more to VZ Navigator, and VZ Navigator VX now gives our customers some of the most advanced mapping and navigation services available today, " said Kristi Crum, director, Consumer Solutions for Verizon Wireless.

ENGADGET: VZ Navigator Version X breaks cover, adds 'virtual city' maps, social features, and more