Data-Driven Driving
Every lap you drive becomes data you can talk to — browse it here, or chat with your own laps in Claude or ChatGPT.
HPDE Laps →
5,153 laps · 715 sessions · 21 drivers · 23 tracks
Latest: Nov 14, 2026, Barber
Sim Laps →
1,031 sim laps · 187 sessions · 2 drivers. iRacing and Assetto Corsa: simulator laps, kept apart from the real ones.
See the rig in the Garage →What's new
He Out-Cornered Me in His Own Car. I Still Won by 1.177 Seconds.
Bill B. at Barber
Best 1:16.5 · E86 track build · 41 laps
NCM Grand v1.3
Map and surface notes moved to Kentucky's 2022 LiDAR survey of the finished circuit; the 2014 survey we used before was flown before the track was paved and had a gap at T5. Sinkhole now −13.6% in and +10.1% out; T12 entry −2.1%; T22 exit −2.2%; T21 slightly off camber; T18 is the best-cambered corner. The line itself is unchanged.
Race line
Barber — every corner, from LiDAR
Study the track →sensor readings — GPS, speed, g-force, braking, steering & engine, logged lap after lap
LiDAR points of the actual asphalt — camber, elevation and crests measured across 3 tracks to ±2.2 cm
Household head-to-head
| Track | Bill B. | Zach B. | Gap |
|---|---|---|---|
| COTA | 2:31.1 | 2:40.0 | +8.920 |
| Road Atlanta | 1:36.2 | 1:52.0 | +15.770 |
| Roebling Road | 1:23.1 | 1:21.0 | +2.040 |
| VIR Full 2014 | 2:12.9 | 2:41.3 | +28.400 |
You can't rent a race engineer. So we built one.
Every fast pro driver has two people: a coach in the right seat, and a race engineer buried in the data between sessions. Coaching you can get — every Chin and JTI weekend has excellent instructors, and you should use them. The engineer is the half nobody rents for a track day. That's the part we do.
Send us your data and we'll write up your sessions — then tell us where we got it wrong, and we'll fix it. That's the whole beta.
Standing challenge: anyone out there under 1:33 at Road Atlanta? Our fastest logged lap is a 1:33.158. Beat it and we'll go find out why — corner by corner, against the camber of the road itself.
Chat with your laps
The data on this site is the public view. Drivers on the platform also get a private connector for Claude or ChatGPT — ask questions in plain English, get answers from your own telemetry.
Email your lap-timer export after a track day — Harry's Lap Timer, RaceBox, or Porsche Track Precision.
Laps are normalized, quality-checked, and ready to query in about 20 minutes.
“Walk me through my fastest lap, corner by corner — where am I giving up time?”