No need. We're solving a narrow problem: students' need to park on campus. Out-of-town commuter and part-time students will need a car. But everyone else is solvable.
Specifically, Merrill and Oakes college have that parking lot, and there's a parking structure by the Earth/sciences building, and another one up above college 11, and several more. Once you get on campus though, there's a reasonably good shuttle to take you around campus, so you just need to park somewhere on campus and then give yourself enough time to take the shuttle to your destination. If you're living on campus, you only need to get off campus to go to the local downtown bar scene, or for other extracurriculars, but there's a bus that takes you downtown so as a student you can get away with not having a car.
Well, it's also not how car problems are solved at UCSC, either.
UCSC is an enclave on a hill with limited transport routes to downtown or the rest of the world. And the UCSC leadership has its hands tied by many different things; they can't just say "OK no cars on campus except if you are a commuter".
