If I remember right the Dodge was the poorest on the windy roads (by a long stretch) and the Caddy (what would GM do without the Ozzy Holden platform?) the best.
On the Salt the Dodge hit 150 in the mile (just - and with a bit of aerodynamic cheating). The Caddy 160. and the Corvette 170.
The best bits are deliberatly setting off car alarms in the street by revving their engines and getting pulled by the police (twice).
Eddie. They also use the road that is used in "Vanishing Point".
Maybe the footage will pop up on youtube?