What if the roads could be used to generate electricity?
The California energy commission is about to launch several projects using what's known as piezoelectric technology. Assemblyman Mike Gatto has been pushing the idea for years.
"It just makes sense in a car culture like ours to use that extra energy that is generated and put it to good use," he said.
YouTube video shows how the technology works. It involves the use of tiny sensors, which are about the size of watch batteries.
"You embed them right in the roadway and as cars and trucks drive over the roadway, it vibrates the road just a little bit, and these substances get charged from that," Gatto added.
The vibrations are converted into electricity that could be a significant power source to many communities.
Experts say a 1.5-mile stretch of just a two-lane highway can power a thousand homes.
The sensors are set to be installed under stretches of roadway in Southern California as part of a test program in 2017.