Radar Roy and I recently completed a cross country/trans-continental rally "race" (Fireball Run
) in my Dinan 5 Series...and I must say it is was a wonderful platform to work with.
With a top cruising speed in the neighborhood of about 170mph, that could certainly put us in contention. We ran very strong in some good company...a late-model Ford GT, Ferrari 360, Aston-Martin Vanquish, a stock BMW 335i & M5 (which both quit at around 155mph).
I have mused with CP about "modding" an Merc E-series diesel. I suspect that would do very nice as well, and with less fuel stops.
BTW, of course our vehicle had a Blinder, Veil, a host of high-end radar detectors, and a bunch of other goodies.