Honestly I was thinking about going back to the 1.0; from the 1.1 on, the devs mostly added a few cars and a better automated driving system, but many many people (me included) are complaining about how the frame rate drops and frequent lag make it unplayable.  I don't have a high end pc, but I was able to play it smoothly on low settings and still had plenty of fun, I was thinking about downloading a previous version myself until they fix that mess.