public MountainBike(long sr, string make, double speed, EnumColor color,
MyBikesStore.Date date, EnumSuspension suspension) : base(sr, make, speed, color, date)
{
this.suspension = suspension;
}
public Roadbike(long sr, string make, double speed, EnumColor color,
MyBikesStore.Date date, double seatHeight) : base(sr, make, speed, color, date)
{
this.SeatHeight = seatHeight;
}
