Syncing between users sharing vehicles would be nice.

I would love this ability, though I understand it'd add a whole bunch more complexity... Maybe to start, add the ability to merge two logs together?

Share veichles info between more users is more like necessary. 

This is marked as "Completed", but as far as I know it does not exist?

How I can share my vehicles with others users?

They have added this feature now.  You just need to set it up on two different devices and use the dropbox sync settings to go to one single dropbox account.

Ah I see - thanks Kevin! A bit more awkward than I was expecting, but may have to go that route!

It will sometimes work through google drive? I do not want dropbox in my phone.

You need to use same google account on your two devices but it's possible.

Here mentioned about syncing between users sharing vehicles several posts are mentioned here and mentioned several thoughts. It is sometimes we swap and fill up each others vehicle which makes    truck accident attorney california  it a pain to track using our current fuel logging app.