I was stopped three weeks ago driving a rental car with Switz plates across the border into France at Bardonnex. I showed them documentation demonstrating my non-EU citizenship and residence, so they let me pass with no problem.
For times when I rent from the French side of GVA, I have a
GPS track for driving between France Alps autoroutes (via St-Julien-en-Genevoise) and the France side of GVA airport -- through the city of Geneva -- without using the Switz autoroute. I also have posted detailed instructions for how to do this without a GPS. A bit tricky, but I've done it successfully several times.
. . (It's much longer, and still tricky, to drive from the French Alps to the France side of GVA _without_ passing through Switzerland).
I assume that a top-quality modern GPS app or device would offer two routes to navigate driving to or from the France side of GVA, one with and one without the autoroute.
Ken
Post edited at 15:08