Derived Class Adds a Method

The base class Vehicle stores a protected speed and has a getSpeed() method. Complete the derived class Car so it:
- has a constructor that takes a speed and passes it to the Vehicle constructor
- adds a new method doubleSpeed() that returns twice the speed

The provided main builds a Car and prints both values.

Expected Output:

30 60↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Inheritance

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