The cost of constructing roads is handled by other taxes, but that doesn't change that the roads themselves need to be priced higher to not have shortages.
That's arguably true of electric vehicles, but ICE engines pay road user fees by way of gas taxes, which are nonzero and related (imperfectly, sure) to road impact.
> causing the induced demand issue.
I think induced demand is not really a road price issue: more road access -> more desirability to attractive businesses -> more demand (at the same price) for road use.
Now, if you charged higher road prices instead of building more roads, to reduce traffic, you'd avoid induced demand by avoiding attracting business and raise revenue, it's true, but the induced demand isn't a product of $0 road cost (which isn't a thing, mostly) but of increased ease of access from the short-term effect of more roads.
No, you can bet there'd be a greater market-clearing quantity. Greater demand would mean people were willing to buy more at thesame price. If anything, over time, lower prices should reduce demand by setting s lower expectation of the “right” price and reducing the quantity people are willing to buy at higher prices.
Demand is the function mapping price to quantity people are willing to buy.