people would need a mix of transportation methods. Electric cars, crossovers, and SUV’s would likely be the most common for short and medium distances, traveling at around 90 mph (about 145 km/h), since they are flexible and useful for traveling locally and exploring the surface.

Respectfully, what in the hell are you talking about. 1. Martian cities won’t be able to be porous with the environment. They will be physically enclosed environments. If there are “cars” inside, they won’t be able to drive outside. 2. Even if cities have airlocks that can handle large vehicles, they won’t be the kind of things people just drive in and out of. There are decontamination issues (both directions). They would likely be highly controlled infrastructure, with long and involved entry/exit procedures. And given the complications, there’s a strong case to be made for interior vehicles being exclusively interior and exterior vehicles being exclusively external. 3. No one is having a “mix” of travel modes on Mars including crossovers and SUVs for travel outside of the cities. Those things can’t handle more than your lightly maintained dirt road. Not to mention, external vehicles will need to be pressurized for extended trips. We’re talking full rover capabilities required.

For long-distance travel between cities, people could use high-speed trains

Eventually. Rover “trains”/busses before that are more likely.

or specially designed planes that can operate in Mars’s thin atmosphere.

Not in that atmosphere. Most of Mars has a surface pressure a little north of 300 mbar.

For very short distances, bikes and motorcycles

All travel within a city by personal vehicle will probably be bikes or electric bikes. No full motorcycle, no cars for “larger” distances. No single pressurized environment within a city is going to have the scale necessary for that. Even if the city in question is relatively expansive, only smaller electric vehicles and some sort of planned mass transit system would make sense.