Sinatra: Send method test

send_test.rb

require 'sinatra'
class Car
  def mpg
    return "50 MPG"
  end

  def length
    return "2.5 meters"
  end

  def width
    return "1 meter"
  end
end

get '/' do
  "Check the mpg, length or width of a car."
end

get '/:method' do
  car = Car.new
  begin
    info = car.send(params[:method])
    "#{info}"
  rescue
    "Not a valid car parameter"
  end
end