Product design question

Design Lyft for large parties.

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 adapt a core product for a distinct use case by identifying what specifically breaks at group scale.

Clarify scope: rides for groups larger than a standard car fits, like bachelor parties or group nights out.
Identify what breaks in the current product: vehicle capacity limits, split payment friction, and coordinating pickup for scattered group members.
Prioritize vehicle matching first, since capacity is the hardest constraint, requiring larger vehicles or splitting into coordinated multi-car rides.
Propose a concrete feature: a group ride mode that either books a larger vehicle or synchronizes multiple cars to arrive and depart together.
Address payment: a built-in bill-split feature so one person isn't stuck paying and chasing others afterward.
Define success metrics: group ride completion rate and time to coordinate pickup, with a guardrail on driver availability for larger vehicles.

Identifies the specific mechanical breakpoints at group scale, capacity and payment splitting, not a vague more social features answer.
Proposes synchronized multi-car rides as a practical solution when a single large vehicle isn't available.
Addresses split payment directly, a common real complaint in group ride situations.
Names driver and vehicle availability as a guardrail, since larger vehicles are a scarcer supply than standard cars.

Designing purely social features, like group chat, while ignoring the real capacity and payment mechanics that break at group scale.
Assuming large vehicles are always available without addressing the supply constraint.

Chapters of the AI PM course that teach what this question tests.