public ActionResult Alta(Vehiculo model)
        {
            db.Vehiculo.Add(model);
            db.SaveChanges();

            return Json(model);
        }
        public ActionResult Alta(Vehiculo model)
        {
            if (ModelState.IsValid)
            {
                db.Vehiculo.Add(model);
                db.SaveChanges();
                return View(new Vehiculo());
            }

            return View(model);
        }