Paying for the upgrade will give you a feature called Call Feature that allows you 

to follow the vehicle's navigation system for changing lanes in the car park.

The call feature allows drivers to steer remotely using the Tesla smartphone app. 

 This function is useful when the car is in a tight parking lot. 

The Autopilot system has improved since 

 its launch in 2014. Model Y owners speak positively of 

 the system and say there have been no major accidents while driving. . 

 It works well on the road even when making

 gentle turns on marked highways or when

 visibility is limited by heavy rain.