The engine they've built for this game has so much potential - I really enjoyed the time I spent with it, clogged up roads/driving AI cock-ups aside. Sadly, though, they've kneecapped the game. The online was one kneecap, but the other is just that they've targeted low-end PCs so hard that even if you're on a high-end PC you can't run larger simulations. The cities are too small, cap out, get boring. It's a shame.
Still worth a few hours if you can grab it cheap, mind.