I think we can all relax about auto interest rates.
There's a possibility, not a likelihood, and definitely not a certainty, that rates will go up the awe-inspiring amount of 0.25% this summer, or this fall, or not for another year. And if inflation explodes - which is a bit of a stretch considering over the last few months inflation has been negative - the Fed might do a few more gentle 1/4% hikes over the next few quarters.
If you were to borrow the entire purchase price of your HR-V (in which case, you probably shouldn't be buying one in the first place), each quarter point rise would cost you $50 a year in extra interest.
So chill and buy your HR-V when you feel like it.