Early Infiniti I30? Maybe a '96??
Really looks like one, but there are a couple of very small details that don't quite fit the photos I found on the internet...
The curve of the fender below the taillights looks more like a Nissan Maxima (the same basic shell with a similar bumper cover), but the taillight detail is a match for the Infiniti. The exhaust outlet is also slightly different. I guess the car could be modified, but I really don't think it's likely.
DB