Okay, so it looks like crap, but if it would indeed get 500 miles on a charge, it might be enough for a round trip to Costco in real life, which is about 300 miles.
How far would it get towing something? That's a completely moot point for us. My girlfriend flat refuses to tow anything with a 1/2-ton (and I don't blame her), while I have tried a couple of times - with predictable results.