Output showing Undefined using find array helper in javaScript

So, here is the code which is using find helper in javaScript and supposed to return a value but instead of that it is showing undefined.

function Car(model) {
this.model = model;
}
var cars = {
 new Car('Buick'),
 new Car('Camaro'),
 new Car('Focus')
};
cars.find(function(car){
 return car.model === 'Focus';
});

I am running this code in VB and the output supposed to be Focus but it is showing undefined.