I'd assume they are traffic cameras that are hard to get power to, reason for solar panel.

Xoom

'98 Ford Contour
Bone stock except for:
Audio: JVC kdlx-100
4 Pioneers 2-180 and 2- 200 watt speakers
Meguiars Car wax

Future Mods:
Fog or Driving lights
Headlight Covers (Blackouts)
35% all around window tints