forwordable

delegator.rb

require 'forwardable'

class Vehicle

  extend Forwardable

  def_delegators :@vehicle, :name, :power, :color
  
  def to_s
    "#{name} with #{power} HP"
  end

  def initialize(vehicle)
    @vehicle = vehicle
  end
end

Car = Struct.new(:name, :power, :color)

def main
  ferrari = Car.new('Ferrari', 125, 'red')
  vehicle = Vehicle.new(ferrari)
  
  puts vehicle.name # Ferrari
  puts vehicle.to_s # Ferrari with 125 HP
end

main()