That's fair. I'm thinking along the lines of major infrastructure projects that would benefit the city and reduce car dependance. For example, the city put $100 million into the WooSox park (which they shouldn't have). Many infrastructure projects are 80% paid for by the federal government.
The question is what is the most impactful project that could have been done with $100M + state and federal funding? Light rail? Regional rail to Providence and Leominster? BRT?
I don't think Worcester needs BRT (which is distinctly different from having a basic bus system). The WRTA is a mess. The bus system should serve core Worcester neighborhoods consistently but it is frequently late, runs at weird times (or gets cancelled without notice), and has inconvenient stops. The whole system needs to be overhauled into a inner-core and county system.
BRT is something you build when you have really strong commuter patterns and can't afford a real subway system for some reason. Worcester doesn't have much of a commuter problem... most of its economy is very local with a few folks coming into downtown to work office jobs (but thats even rarer now).
So yea where I would spend the money:
1. Upgrade Boston <-> Worcester connectivity more... which is in the cards with East-West Rail Project. I can drive door to door from Worcester to Boston in 45 min off-peak (and even during peak it's not _that_ bad). I used to take CR from Union to South Station on the express line and between house to station, plus train, plus station to office it closer to a 90 min commute and it cost like $300+/mo.
2. Figure out how to fix the WRTA and make the bus serve core neighborhoods consistently. Getting people to the various little spread out village business districts spread around the city effectively (downtown, goldstar, multiple shrewsbury st stops, canal district etc etc.)
3. Explore improving connectivity to Providence... I'm not sure $100 million gets much done rail-wise, but it should be able to get to Providence on a train or a bus without heading into Boston first or using a Peter Pan bus that costs $20.
4. I'd look at better bike infra but the hills in Worcester suck for biking.
For what it is worth, I don't think you can realistically reduce car dependence in Worcester. Central MA is a car-centric place... everything is spread out and the terrain is unfavorable for walking large distances. Economically there isn't enough momentum or demand for real rapid transport. There are districts where you can build pedestrian friendly stuff but they'll be small and the people that live there will expect to own a car because there's not much else beyond a half to one mile radius even in any of the truly dense areas.