Yeah, I don't want my preferred playstyle to be favoured, just treated fairly:

* Add all of the non-car transport options: walking paths (including underground and raised paths for walking between large buildings in the winter, a la PATH in Toronto), bike paths, buses, streetcars, light rail, subways, inter-city trains, high speed rail, ferries

* Add parking lots as a feature to all commercial and residential construction, require every car to be parked somewhere when not in use, but allow residents/property owners to decide whether to build parking or not

* Allow land-value taxes as an alternative to property taxes, as well as the possibility for things like street parking and pollution ordinances to give you levers to incentivize/disincentivize the construction of parking lots

* Simulate emissions appropriately from all transport methods

* Parking lots and heavy traffic should lower property values, as citizens complain about the ugliness, pollution, noise, and danger of excessive traffic

There's a whole conversation to be had about the design of games like SimCity and how it affects future urban planners, but that may be going too far afield. Still, I think it would be nice to have a game that doesn't reward car-centric planning while burying the drawbacks.