# DragGap

> DragGap is a free browser-based car acceleration and 1 km race simulator. It compares two vehicles using official EPA configuration records, NHTSA identity data, clearly labelled ODbL supplemental specifications, and a deterministic 120 Hz physics model.

Simulated 0–60 mph, quarter-mile, gap, and 1 km results are engineering estimates, not instrumented track measurements. Cite the original EPA, NHTSA, or Open Vehicle Specs source for source facts and describe DragGap outputs as simulated.

## Primary pages

- [Live car race simulator](https://draggap.com/): Choose two vehicles and run the animated comparison.
- [Car comparison questions](https://draggap.com/comparisons/): Head-to-head guides answering which car is faster.
- [Methodology](https://draggap.com/methodology/): Physics, calibration, timing gates, accuracy, and limitations.
- [Vehicle data sources](https://draggap.com/data-sources/): Provenance, coverage, licensing, and field-level boundaries.
- [About DragGap](https://draggap.com/about/): Purpose and editorial principles.
- [Complete AI briefing](https://draggap.com/llms-full.txt): Full comparison index and citation guidance.

## Machine-readable resources

- [XML sitemap](https://draggap.com/sitemap.xml)
- [OpenAPI description](https://draggap.com/openapi.json)
- [Vehicle data manifest](https://draggap.com/data/vehicles/manifest.json)
- [Vehicle model catalogue](https://draggap.com/data/vehicles/catalog.json)
- [Agent capability declaration](https://draggap.com/agents.json)