Most European towns/areas that are pedestrianised also have dedicated parking and other options nearby, whether that be a bike rental service, bus route, Park & Ride schemes, trams or subways.
You could also have off-road options like dirt bikes, dune buggies or 4x4s.
Bus stops and subway rabbitholes would be great things too, if we could get them.
All extra travel options are fine with me. They all have the ability to add gameplay (such as taking the bus for a moderate fee, or walking/cycling for free and arriving at your destination wet & cold from the rain, or hot and sweaty from the heat).