Also reported as Vehicle Building Game · Build a Small Car Over Obstacles · Robots
One of several mini-game tasks in Roblox's OA assessment. Within a fixed time limit (approximately 25 minutes), the candidate must build as many distinct, non-duplicate small vehicles (cars) as possible using selectable components/parts, and successfully navigate each built vehicle through a designed obstacle course / terrain challenge. Different car parts have different functions suited to different terrain types (e.g., an infrared route-recognition module and an auto-walk feature are among the available tools). The goal is to maximize the number of unique vehicle designs that can pass the course. More distinct working solutions yields a higher score.
Common mistakes: Candidates produced very few distinct vehicle designs (e.g., only two plus one combination) because they did not have a deliberate strategy for systematically varying components.; Time management was a widespread problem across all mini-game tasks; candidates ran out of time before exploring more combinations or finishing other sections.; Reddit commentary noted that Roblox weighs the game results heavily, so underperforming on the vehicle task likely had outsized score impact.
Interviewer hints: The scoring explicitly rewards more distinct, working vehicle designs — maximizing unique solutions is the stated goal, not just passing the course once.; Different car parts have different functions suited to different terrain types, so component selection should be terrain-aware.
What passers do: Recognizing and leveraging the infrared route-recognition module combined with the auto-walk feature as a highly reliable component pairing to clear the obstacle course.; Aiming to produce as many distinct vehicle configurations as possible rather than perfecting one design, since the score is explicitly tied to the number of unique working solutions.; Approaching the games with prior experience in factory/simulation games (e.g., DSP, Factorio) appeared to help candidates get up to speed quickly on the vehicle-building and factory tasks.
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