I guess the way to solve this disease is just to use Enum for what they are supposed to be used for. Which is storing a state, that's it.
This article really lacks of OOP concept. In the first example the enum is a property on the 'vehicule' object, it would be way better to add all the properties needed to that class instead of creating a weird 'VehicleTypeTuple' struct...
@th0br0 J'arrive is absolutely not a check-in like app.
It's an app that going to help you to share your location with your friends for a given amount of time. You can compare it with 'Find my Friend' but available for everyone (not only iPhone's user).
And don't worry about your French, J'arrive will be available in english (with of course some french touch magic in it ;)).