Don't make me quote from Hansard!! ;-) Actually, it's a pretty good read on the current lay-of-the-land, and since the Libs brought the program in, I can't imagine any party is keen to object to keeping it topped up...at least before our next provincial election.
From the lips of our Finance Minister herself on May 6th:
Monday, May 6, 2019, p.m., Issue 248
Hon. C. James: I think the member rightly talked about the work being done in EMPR with the federal program. So we’re waiting for the federal program to come into place to see whether any adjustments would need to be made over this next year with our provincial program as well.
I think it’s important to note that for CleanBC, just for this fiscal year, there’s $37.3 million in contingencies in this area. A large portion of that, we expect, will be allocated towards the electric vehicle program.
As I say, I think the budget allocated funds to the CleanBC program (of which the EV program is part of), and I think the contingency relates to the entire program, not just the EV program. That's probably largely moot, though, because, again, I suspect there are very few votes to be had by using the contingency to help heavy industry offset their tax burden (for example)--which they could do under the CleanBC program--as opposed to handing it out to individual voters buying EVs.
Again, because this is all political, I also can't imagine the Ministry of Energy and Mines, which has discretion over funding the EV program, choosing to leave a lengthy "gap" in funding (for example, to try and spread it out over the fiscal year), but you never know.