Vehicle physics

[PrimeTheFirst]

I am making a car game using Three.js and physi.js . Only , I have never worked with car's before .As in the physi.js website , the example : https://chandlerprall.github.io/Physijs/examples/vehicle.html has car physics using physi.js' s vehicle method . As physi.js has no documentation , I would like to know how to implement vehicle physics. Thank you.

[PrimeTheFirst]

And is goblin Physics the new version ?