Gravity Vehicle Concept Lab course
Compare vehicle concepts against a reference on surveyed terrain. Predictions are relative — read the Δ, not the absolute time.
Concepts
Vehicle
What the badges mean, and how to change them
Click any badge to change it, or choose “— remove badge” to clear it. A field with no badge shows + badge — click that to add one. Badges are per concept, so the same field can be measured on one and assumed on another.
- measured — weighed or measured on this vehicle
- independent — from an external source (CFD, tyre data), not fitted to a run
- estimated — judged, not measured
- fitted — backed out of run data, and therefore contaminated by whatever else that run contained
- assumed — picked. If a result depends on one of these, it is a hypothesis, not a prediction.
Badges are not decoration: the headline, the waterfall and the breakeven panel all call out how much of a result rests on values marked assumed or fitted.
Driver & conditions shared
Held constant across concepts, so a Δ isolates the vehicle.
The car starts from rest. There is no push-off: the start line falls at 6.6%, which is enough for gravity to move it.
Compare against a real world run
or click to choose
Result
Sensitivity to the dominant assumption
Where the difference comes from
Where effort pays what to measure next
Speed along the course
Shaded bands are the named corners; the dashed line across each is that corner’s grip limit. Where the trace touches the dash the corner is grip-limited; a gap means the car arrives below the limit.