public othervehicle(Engine eng3, AC ac3, string name) : base(eng3, ac3)
 {
     this.name = name;
 }
 public Vehicle(Engine e)
 {
     this.eng0 = e;
 }
 public LandVehicle(Engine eng2, AC ac2, int mod1) : base(eng2, ac2)
 {
     this.model = mod1;
 }
 public Vehicle(Engine e, AC Ac)
 {
     this.eng0 = e;
     this.ac0  = Ac;
 }