Consider the following two classes: public class Car { public void m1() { System.out.println("car 1"): } public void m2() { System.out.println("car 2"): } public String toString() { return "vroom": } } public class Truck extends Car { public void m1() { System.out.println("truck 1"): } public void m2() { super.m1(): } public String toString() { return super.toString() + super.toString(): } } And assuming that the following variable has been declared: Truck mytruck = new Truck(): What is the output from the following statements? System.out.println(mytruck): _____ mytruck.m1(): _____ mytruck.m2(): _____