The site is written from Texas. Its four sections divide the subject by the kind of record each one rests on. Ranch Roads works from geography and from TxDOT's published traffic and crash reporting. Machines works from manufacturers' own reported volumes and filings. Racing treats the championships as businesses with owners, promoters and sanctioning fees. Rules & Data works from regulation text and from the fatality figures NHTSA and the state publish.
Quantities on this site are drawn before they are written out. Where two figures are compared, the bars share one scale and the caption says so. Every figure carries the body that reported it and, where the number will age, the year it was taken.
The complete roster sits on the archive, and each section page lists its own pieces in full.