Modeling the transition toward a zero emission car fleet: Integrating electrification, shared mobility, and automation

•Transition modeling considers the phase-in and -out of technologies and time delays.•Electrification speed is the most important factor toward a carbon-neutral car fleet.•Swiss climate goals can be met by phasing out new ICEVs by 2025 and hybrids by 2030.•Electric autonomous cars with ride-sharing will yield the largest emissions reduction.•Autonomous cars without shared mobility will lead to the highest emissions levels.