Claimed Commercial Clean Air Tax Credit. Marked it as related to passive income activity. Where did the 7500 credit go?

I claimed Commercial Clean Air Tax Credit (45w) for my pickup truck that I am using for my rental property. Since I am not real estate professional I believe I have to mark on Form 3800 "Check if all passive".

However, when I do that, I see that my tax liability increases back by $7,500. Essentially no tax benefit.

So where did the $7,500 tax credit go after marking it as passive? Here is what I tried:

1. I artificially increased my gross income from rental properties so there definitely would be enough tax to offset. But it still not reducing tax liability if marked as passive tax credit.

2. I exported my tax return as PDF and searched for 7,500. The only place I see it is on 3800 Line 2.

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