By showing the number of cars parked on the main road
							                                
                                        
                                    
							                        
                    
                            By showing reflections of any unseen vehicles approaching
							                                
                                        
                                    
							                        
                    
                            By letting you check that the vehicle's indicators are working
							                                
                                        
                                    
							                        
                    
                            By letting you check for any good bargains, sales or promotions
							                                
                                        
                                    
							                        
                     
	 
	