I've put together a Dataset of some minimal sample data for a 1-month period(24,000 vehicle records) which I've hosted in a public cloud object for anyone who's interested in it:
CloudGet[
CloudObject[
"https://www.wolframcloud.com/objects/user-3dda987a-0947-4a34-862d-4207e4ab4f4c/SampleVehicleData"
]]

Hopefully that gives you enough data to play around with and see if anything interesting shakes out.