Assume the following description:

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The target system is used for a vehicle cruise control and monitoring. The cruise control functionality starts when the driver puts the cruise control lever to the ON position. The cruise control functionality is immediately disable once the driver pushes on the brakes. In order to determine the current speed, the system needs to receive the number of shaft rotations from the wheel and receive input from the timer to calculate the current speed. If the speed is too high, the system reduced the pressure on the throttle. If the current speed is too low, the system increases the pressure on the throttle.

The maintenance functionality makes sure the car is monitored well. The system receives input from the engine and the water tank to determine if the engines oil needs to be changed or if the washing water is too low. The system also receives input from the gas tank to determine if the gas is too low. Any warnings to the driver are displayed on the maintenance screen. For each of the three monitoring features it performed (engine oil, water tank and gas tank), there is a separate button for each monitoring feature that the driver can push to indicate that the corresponding service has been completed. For example, after an oil change is performed, the driver can push a button to indicate to the system that an oil change service has been performed.

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Draw the system context diagram corresponding to the above description

Hint: These two main functionalities will be performed by one system