In the early to mid 90s, the TX DPS (highway patrol, etc) had about 3 dozen seriously warmed up Camaroes and about 18 'Stangs, to be used in high speed pursuits. Apparently they were rather successful in the immediate areas were they were deployed.
Have any other states done the same? The Austin PD has several "stealth" Magnums, but they admit that the cars really aren't capable of running down a car that leaveds the freeways, ie MoPac and I35.
TXDPS has been drooling over the GT 500, but they have to convince a legislature that is several billion short to buy them 3 or 4 dozen.