So basically you're paying $590/month and the company's giving you $600/month to cover it.
Ignoring the taxes, you're just breaking even.
Since you're driving for your job, you can cut down on miles.
I don't see "a save" for your situation right now, but you can walk away with a lesson for the future. I assume you're going to stay in sales, and eventually this car (and its payment) will be gone, and you'll need to purchase a new one. At that point, purchase something in a lower price range and something with good mileage. If you do this, you could easily end up with money in your pocket every month.
By the way, I don't think a new car is always a mistake. When we purchased my little car six years ago, we set out with the idea of buying late-model-used, but I drive a very popular car, and the price difference between the very few late-model-used cars and a brand-new one was less than $1000. I don't think this is a typical situation, but it does happen. We paid cash for the car ($19,500) and have done very little to it since -- a set of new tires, a lifetime alignment. We've treated it like a baby (especially with the oil changes), and it still runs like new, and I have no reason to think I can't drive this car 'til my youngest finishes college -- that's six more years. We bought this small, economy car because we knew we'd be driving a lot while our kids are in college. No regrets here!