I drove an aston martin v8 at an experience day last year and the guy sitting next to me wouldnt let me thrash it for obvious reasons! he was telling me when to change up/brake etc etc
On my last lap i left it in gear and nailed it down the back straight as he couldnt throw me out as it was my last lap anyway!
He was highly unimmpressed to say the least! but at least i got a feel of what it could do
I have had my roadster around the same track (quite tight) and im certain my roadster would run rings around it until the main straight where the aston would deal out an ass whippin

but the roadster would be that far ahead by that point it wouldnt matter anyway!
Gorgeous cars but more of a grand tourer than a race car