So, as an engineering project, what would you need to beat a Veyrons 253.8 mph?
A dirty great big turbo i would imagine, or perhaps twin turbos.
It'd have to be a VW engine in a VW chassis.
R32 stripped down to bare essentials? Or perhaps transfer that into a mk2 as it's a lighter shell with wide track? Corrado?
Carbon fibre everything?
Surprised someone hasn't already done this top speed malarky before, didn't someone do a twin engined VR6 mk3 a while back as a demonstrator?