Built in the garage
trackdays.ai is what happens when a data engineer spends his weekends at HPDE events and can't leave the telemetry alone.
I'm Bill Baldwin — car #9, the blue BMWs above. I instruct with Just Track It and Chin Motorsports, and spend most weekends at Road Atlanta, Barber, and wherever else the calendar points. The license plate isn't a joke: I build data platforms for a living.
Every lap timer worth running — Harry's Lap Timer, RaceBox, Porsche's Track Precision app, GM's PDR — exports rich telemetry that mostly goes nowhere. trackdays.ai is my attempt to fix that: the files get ingested into a real data pipeline, every lap gets quality-checked against track geometry, and the result is usable two ways:
- Lap Data — the public, read-only view: every quality-checked lap, sliceable by driver, car, and track.
- Chat with your laps — each driver gets a private connector for Claude or ChatGPT. Ask “where am I losing time?” in plain English; the answer comes from your own GPS trace, not vibes.
The build itself is documented as it happens at blog.trackdays.ai — over-engineering a hobby, one subsystem at a time.
Honestly: this is a work in progress
trackdays.ai is in active development, being tested right now with a small group of drivers. You will find rough edges — a mislabeled track, a lap time that slipped past the quality checks, a car name that came through mangled. Every anomaly a tester spots makes the pipeline better, and several already have. If something looks wrong, it probably is — tell me: bill@wrbaldwin.com.
Get in touch
Want to help test it with your own laps? It's an email. Coaching, data questions, or anything else: bill@wrbaldwin.com.