Awesome. Will report back if I experience any issues.

Oh one quick follow up, will data entered on the fuelly website be pushed down to my device's aCar instance?

No, integration is not complete, so sync is not yet available.

Ah, that's important. What happens to data on either aCar or Fuelly.com when sync is turned on? Which data gets deleted?

We never delete data.
We'll handle it like we are handling the iOS migration. You'll have 2 vehicle profiles (1-aCar Vehicle and 1-Fuelly.com vehicle). You can then decide which you'd like to keep, but you'll have both available so you can ensure data matches/migrated correctly.

There's no application for Pc yet but you're still able to install Android apps on Pc with Android emulator like Nox, BlueStacks, or MEmu (get aCar apk file directly from Play Store with Download aCar - Car Management, Mileage for PC - choilieng.com or from apk mirror) but the app would run a little laggy if your PC memory is insufficient.