In Florida's Walt Disney World and Disneyland in California, the vehicles include a horse-drawn street car, an 2-storey omnibus, a jitney (a roofless automobile) and a fire engine.
At Disneyland Paris, guests can ride in a classic Mercer, a Paddy Wagon, an omnibus, a fire engine or a limousine.
At both Disney World and Disneyland Paris, the pick up points for these trips are the Town Square area and the Central Plaza in front of the princess castles.
I'll confess to never having ridden one of these vehicles on our visits to Paris or Orlando, but my parents and in-laws did ride them on our last visit to Disneyland Paris. It's something I would consider doing on a future visit, particularly one of the open-topped cars, or riding on the top level of an omnibus and seeing how it changed the view of Main Street.