hmm....well ok, then what about using the
Freematics ONE as a data logger, triggering it via BLE and downloading the data at the end of the race? Its arduino based, has a pile of features, and is quite cheap.
Freematics Vehicle Data Logger V4 (Freematics ONE)
Arduino Compliant Yes
User Programmable Yes (via USB)
Built-in MEMS Sensors 9-axis MPU-9250
High Update Rate GPS Yes (up to 10Hz)
xBee Module Extension Yes (GSM, WIFI, xBee etc)
Mass Storage (microSD) Yes
OBD-II Firmware Upgrade Yes
iOS Device Connectivity Yes
Controllers Inter-connection SPI @ 8Mbps
I have an earlier generation of this from a couple years ago. While I had some opinions about his code at the time, I found hardware itself was quite solid. And, of course, since its
open source, you can do pretty much anything you want with it.