It's as rare as hen's teeth and just sitting there covered in dust.
First, let's have a quick history lesson. Back in 1996, GM created the first mass-produced electric car of the modern era, and the first passenger car to be branded as GM rather than one of the umbrella company's brands. It was available through limited lease-only agreements in select cities and states. The end of the EV1 was controversial, and GM was accused at length of self-sabotaging the project. GM didn't offer lessees the option to buy and simply repossessed the cars so they could be destroyed. A few were donated overseas, but only one remained intact for donation to the Smithsonian in the US. Despite its unceremonious demise, it's the precursor to the Chevy Volt and Bolt.
That means that what you're looking at here is one of the rarest 1990s production cars on the planet, and it's sitting in a parking garage covered in dust. It was spotted by a reader of The Drive that Tweeted pictures as proof of its existence. The Drive has tracked the abandoned EV1 down to a specific location in Alabama, but is, wisely, not telling people the exact location. It's hard to put an exact value on this piece of history as a fully intact vehicle, but it's easily worth a couple of hundred thousand dollars. Rumors of one trading hands for half a million just over ten years ago suggest that it would now be worth more.
The other reason for not exposing its exact location is so GM doesn't reclaim and destroy it. Although, at this point, we suspect the company might just put it in a museum. While it looks like it has been left to rot in the garage, the EV1 is sitting high at the front end, which suggests it's missing its battery pack and possibly the asynchronous electric motor. A Facebook post from someone else that discovered the car says that the interior looks to be in great condition, so getting it rolling again shouldn't be too big of a project.