Enable a button if atleast one checkbox is checked using javascript

How to enable the submit button when I check atleast 1 checkbox?

$("input[name='vehicle']"), submitButt = $("input[name='finalpay']");
var checkboxes = $("input[name='vehicle']"),
  submitButtList = $("#Submit");
checkboxes.click(function() {
  submitButt.attr("disabled", !checkboxes.is(":checked"));
  if (!checkboxes.is(":checked")) {
    submitButtList.addClass("disabled");
  } else {
    submitButtList.removeClass("disabled");
  }
});

<script src="http://ift.tt/1eH01Db"></script>
<input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>
<input type="checkbox" name="vehicle" value="Car"> I have a car<br>
<input type="submit" value="Submit" disabled>