A car isn't the only type of vehicle. You can own an electric bike, which is an electric vehicle.
If you see “vehicle” and automatically think “car”, consider why that might be.
If you see “vehicle” and automatically think “car”, consider why that might be.
I'd also point out that the traffic holding up your bus is mostly cars :) so if enough people can be persuaded to shift to the denser form of transport (buses), those buses would waste less time in traffic — and so would the fewer people using cars out of necessity, and emergency services and so on.