What is the output of the following code snippet?

class Car

$\{$

public:

Car$()$;

Car$($double new$\_$speed$)$;

double get$\_$speed$()$ const;

private:

double speed;

$\}$;

Car:: Car$()$

$\{$

speed $=0$;

$\}$

Car::Car$($double new$\_$speed$)$

$\{$

speed $=$ new$\_$speed;

$\}$

double Car::get$\_$speed$()$ const

$\{$

return speed;

$\}$

class AeroCar : public Car

$\{$

public:

AeroCar$()$;

AeroCar$($double new$\_$height, double new$\_$speed$)$;

void display$\_$data$()$ const;

private:

double height;

$\}$;

AeroCar: :AeroCar$()$

$\{$

height $=0$;

$\}$

AeroCar: AeroCar$($double new$\_$height, double new$\_$speed$)$

: Car$($new$\_$speed $*2)$