My friend keep patience. Do not compromise car for short waiting of X month, when you look at bigger picture. My wife always says " get what you want rather than what is available" You will keep this car for a long time , so some patience will help in long run.
As I indicated to you , rebate is a function of booking date not a function of delivery date , so there is 99% chances that if you already have paid deposit and booked and have receipt from Honda , you will get a car and rebate both , it is just a matter of time.
Let's think of this scenario. Honda cannot fulfill the 2018 order and promises a 2019 at comparable price, etc. Conservatives get elected and cancel EV incentives. Yes the rebate may be applicable for 2018, but not for 2019 Clarity. I'm still out $13K. I don't think I would have any recourse for lawsuit, however, I'm not a lawyer so I can't say. Either way even with a suit or class action, it is still stressful and a pain that I would rather not have to go through.
Happy for all the people who get theirs and would be happy if I get mine, but I'm sure there will be a big chunk of people that would be pretty upset if they didn't get one. Promises mean nothing unless you get a VIN.