Errand detour on a commute vs a dedicated round trip

Errand detour on a commute vs a dedicated round trip. Annual cash difference (dedicated − detour); Annual minutes difference (dedicated − detour).

Quantity comparison for ordinary shopping and household errands. Excludes emergency travel, decisions to reduce medically necessary travel, evacuation, safety-required outings, delivery-driver work and commercial logistics routing. No route safety, maps, traffic, optimal route, fuel prices, fuel efficiency or parking fees inferred. No recommendation to reduce trips or detour. Starting values are editable examples. Apply the same currency, distance unit and cost basis to both scenarios; no automatic unit conversion. Time value is a separate reference, not spending. Enter only the added detour on a commute, school trip or regular outing already happening. Exclude the shared original commute distance, time and costs. Annualize dedicated-minus-detour differences by events/week × weeks/year. Keep negative differences.