Estimation question

What is the size of the micromobility market in the United States?

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Whether you can size a market using ridership, pricing, and geographic coverage assumptions rather than a guess.

Clarify scope: revenue from e-scooter and e-bike rentals across US cities where services currently operate, not a future potential size.
Estimate the number of US cities with active micromobility service and average population per city currently served.
Estimate ridership: average rides per day per served city, and average revenue per ride based on known typical per-minute pricing.
State each assumption clearly, such as roughly 100 major cities served, and a few thousand rides per day in an average-sized market.
Multiply rides per day by revenue per ride by number of served cities, then scale to an annual figure.
Present the result as a range and flag ridership per city as the most uncertain, most sensitive assumption.

Builds the estimate from ridership and per-ride revenue rather than guessing a total dollar figure directly.
States a labeled assumption for served cities and average rides per city, grounding the estimate in a defensible structure.
Uses known typical per-minute or per-ride pricing as an anchor instead of an arbitrary revenue-per-ride number.
Flags ridership per city as the most sensitive assumption, since it varies hugely between dense and sparse markets.

Giving a single guessed total with no visible ridership or pricing structure behind it.
Ignoring that ridership varies enormously between dense urban markets and smaller cities.

How would this estimate change if you included both scooters and e-bikes as separate categories?
Which assumption would you most want real data on to sharpen this number?