i think the implication is that someone once said he couldn't go in his non ford car
then some else in a non ford car was allowed to go on (the merits of this are neither here nor there)
he now feels that it is not worth making a long trip in such a short time frame if the previously "assured" spaces he was not allowed to take will be offered again

it's not like going to you local drive through to watch the chavs get arersted is it, its taking serious machenery across great distances, and then back again so i totaly understand where he is coming from

hth