Between Mach 1.3-1.4
You couldn't even hear me coming...
BTW...
A 200 HP SVT tops out at 143-144 mph. Drag limited
It has a better CD than a regular Contique too.
Then ponder

about what a car with a slightly higher drag and 30 less HP can top out at... "Un limited" of course...
Closed track, professional driver, contents may settle, pre-cooked weight, low & too the left...