I ran mine in the premium Subaru Cusco Impreza JGTC car. It's got 4WD to help conserve tyres and great handling, my averages were 5 laps per set of tyres (Racing Hards down to 25%) and a full tank of fuel is safe for 9 laps (returning and changing tyres every 5th lap worked perfectly).
Since it's not judged by distance, but time, having a ridiculously fast car like some I've seen suggested is a bit pointless...I just picked something easy to drive that can gain a good lead without needing perfect concentration.