Very intersting. I've noticed that the NYPD has tons of Impalas. So many in fact that there might even be more of them than Crown Vics. Although it's probably pretty close to 50/50. I don't understand why they use so many but no one else does... My city's department has oh, about 100 cars I'd say. And out of these cars only four are Impalas and the rest are Crown Vics. Isn't the Impala faster than the Crown Vic, and smaller and more nimble too? Not to mention ages ahead in mechanical technology. It's a mystery why more departments don't use them...