Ruby: Calling class method from instance

In Ruby, how do you call a class method from one of that class's instances? Say I have

class Truck
  def self.default_make
    # Class method.
    "mac"
  end

  def initialize
    # Instance method.
    Truck.default_make  # gets the default via the class's method.
    # But: I wish to avoid mentioning Truck. Seems I'm repeating myself.
  end
end

the line Truck.default_make retrieves the default. But is there a way of saying this without mentioning Truck? It seems like there should be.

Rather than referring to the literal name of the class, inside an instance method you can just call self.class.whatever.

class Foo
    def self.some_class_method
        puts self
    end

    def some_instance_method
        self.class.some_class_method
    end
end

print "Class method: "
Foo.some_class_method

print "Instance method: "
Foo.new.some_instance_method

Outputs:

Class method: Foo
Instance method: Foo

Stack Overflow Q#2527830, score: 656