Solar Trickle Charger

The Rain Sensor for the automatic wiper rain system sparked this Idea. Why not put a tiny solar panel some where on a vehicle to trickle charge our Ford batteries. Would this not prevent the dead battery disapointment situation caused from sitting too long unattended? This is used on remote generator applications when batteries are kept charged for emergency starts. Is there any chance that the technology is available to apply this idea?
Shawn M 08/09/2013
Just google it this would cost like nothing to engineer. Brilliant thinking!