Let's get one thing straight right off the bat: This isn't a perfect KITT replica. The original KITT used in the Knight Rider TV series was based on a 1982 Pontiac Firebird Trans Am. The one you see above, which is currently for sale at auction site Bring A Trailer, is a 1987 model, and since it's a GTA edition, it has some extra body cladding that the smooth-sided television car lacked. That aside, most casual observers would probably never notice the difference, and even those who did (like us) are still likely to be impressed by the car's transformation.
This KITT replica is powered by a 5.0-liter V8 engine mated to a four-speed automatic transmission. It ought to be fairly quick, though quite a bit shy of the fictional car's very fictional 300-mph top speed. We're not exactly Knight Rider experts, but some quick Google sleuthing suggests that the Knight Industries Two Thousand supposedly cost more than $11,000,000 to build in Hollywoodland. This one will surely command a significantly lower sum — as of this writing, it's been bid up to $18,000 with four days remaining on the auction.
For those truly fanatical about accuracy, here's a video of one of the originals visiting Jay Leno's Garage for reference. There are several videos of the car that detail its modifications inside and out, but suffice it to say it seems to be a well-sorted replica. Here's hoping its new owner keeps it well clear of other KARRs.