Parking, which includes income from city-owned garages, parking meters, neighborhood parking permits and parking fines, typically brings in $6 million to $8 million per month.

That also doesn’t include the property and other general tax contributions (income, sales tax, etc.) of those drivers.

Fare box recovery rates for MTA in Baltimore is currently less than 13%, although that’s lower than normal (I think it was around 20-30% prior to coronavirus — and note that prior to 2017 there was a legally required 35% recovery ratio).

I put this out there because there are certainly very good ways to make the argument that you are making, but I don’t think you’re going to have much luck saying that non-drivers are subsidizing drivers. It’s simply not factually accurate.