(1) (a) Who is the preferred service provider used by her department for the hiring of vehicles and (b) why is this company preferred; (2) whether her department has a fixed contract with the specified service provider; if not, why not; if so, what are the relevant details; (3) with regard to each instance in which vehicles were hired for use by (a) her and (b) her Deputy Minister since 1 March 2010, what is the (i) name of the service provider and (ii) reason for making use of the specified company?