无法访问本页的原因是:

Exception of type 'System.Web.HttpException' was thrown..
System.Web.HttpException (0x80004005): Exception of type 'System.Web.HttpException' was thrown.---> System.NullReferenceException: Object reference not set to an instance of an object.at InventoryWeb.Controllers.MobileNewController.CarDetail(String Id) at lambda_method(Closure,ControllerBase,Object[] ) at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller,Object[] parameters) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext,IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext,ActionDescriptor actionDescriptor,IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.. b__12() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter,ActionExecutingContext preContext,Func`1 continuation) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<>c__DisplayClass17.. b__14() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext,IList`1 filters,ActionDescriptor actionDescriptor,IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext,String actionName) at System.Web.Mvc.Controller.ExecuteCore() at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) at System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) at System.Web.Mvc.MvcHandler.<>c__DisplayClass6.<>c__DisplayClassb.. b__5() at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass1.. b__0() at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.. b__7(IAsyncResult _) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() at System.Web.Mvc.MvcHandler.<>c__DisplayClasse.. b__d() at System.Web.Mvc.SecurityUtil.. b__0(Action f) at System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step,Boolean& completedSynchronously)