This is too far from happening here in my country but not impossible to happen. If they can implement this bitcoin as a payment then paying on restaurant is much easier and it is just like credit cards. Unless my country fully utilized the benefits of bitcoins then it will be a bigger help in other industries as well.
I hope in future you can able to use bitcoin for paying in restaurants because still, there are many people afraid of these government rules and regulation. Once government approves not only in restaurants we can able to pay many outlet stores through bitcoin.
But do you really think that Government will support bitcoins in future and that creates a big question mark on the future of bitcoins as there are also chances that Government will completely ban bitcoins and in that case we won't be able to use them anywhere.