I feel like the best way to make getting from A to B quicker is for A and B to be closer together. Which makes walking or biking more practical and you don’t have to spend as much money on public transit.
Only when the distances are greater than short-walk distance. Cars take up (huge amounts of) space at their destination by parking. You can only push two destinations so close together before their parking lots merge.
Only to a point, because car trips have more “friction” especially in a city.
For example, you might need to spend some time getting to/from the car or wending your way through a parking structure. You may need to drive a more circuitous route due to one-way streets—-and certainly can’t cut through a park or building. You don’t need fuel/charging or maintenance every trip but it amortizes out to a small delay. And there’s traffic!
Anecdotally, a 15 minute walk (~1 mile) is probably about the break-even point. My spouse and I both went that far yesterday, one in a car and one walking, and yet we both got home at almost exactly the same time.