I considered vinyl for the garage but it can quickly get expensive, I mean $35/m for 6*6m , $1260 for the garage floor?!
And that's assuming a do it yourself job.
2nd hand/seconds might work fine, vinyl tiles would look good to it's all a question of how much you want to spend and what you can get.
In retrospect I was considering how much it would cost to "hone" the concrete, polished concrete would be expensive but I think you can seal it fairly well a little cheaper than that without the pretty look...