History
Records are the source of truth for what was done to a vehicle. Classifications tag those records. Projections estimate where the mileage will be in the future.

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- Logging a record - A record is a maintenance event: oil change, tire rotation, brake service.
- Mileage and projections - Spanner estimates where each vehicle's mileage will be in the future, based on record history.
- Classifications - A classification is a tag that groups related records: oil change, tire rotation, brake service.
- Search - Find records on a vehicle by searching notes, cost, mileage, date, or classification.