Added the exception message when the driver has to close and re-open due to a communication errors.

src/model_car_driver_base.cpp

@@ -129,6 +129,7 @@ void *CModelCarDriverBase::data_thread(void *param)
       driver->serial_port->close();
       driver->serial_port->open((void *)&driver->device);
       driver->serial_port->config(&serial_config);
+      std::cout << e.what() << std::endl;
     }
     catch(CException &e){
       std::cout << e.what() << std::endl;