Is there OpenCV code around for car recognition?

edit

I am building a kickstarter project for an autonomous skateboard service...My project is to build a service that gives people an easy fun way to go the first and last mile of any trips.

Here is a draft of the project https://www.kickstarter.com/projects/...

please join our collaborative swarm.

One of the actions of these skate boards is to deliver themselves to their customer. I want to have cameras on the skateboard that can see and avoid cars, people and curbs.