The most advanced one I am aware of is Carnomaly - team is setting entirely new standards on the market. In few words, Carnomaly will become the first company ever to offer a worldwide rebate for an automotive purchase. Both new and used vehicles will apply, as long as they are purchased from a verified legal dealer anywhere in the world. Upon completion of our consumer platform, Carnomaly will begin buying back tokens to replenish the rebates for years to come. Of course, there are much more benefits, what I recommend you to have a look at - their website. A lot of useful info is available there, have a look