Williams F1 Test at Brands Hatch

I thought I would try the Williams F1 at Brands Hatch to see how much faster it was than the Renault 2.0. The Renault 2.0 depending on the driver and weather runs 1:20 - 1:28, my best lap in the Williams was 1:08 and change. i ran the Renault best time at 1:26.5
I wish I would road race.