Brings back some memories..
The newer transitions lenses work inside cars also. I have transition lenses and have a lightly mirror tinted AGV shield. Nice combo. I don't have to change glasses or screen for night. Never thought of tunnels, however. I used to ride through tunnels a lot in Japan, but had narrow lensed glasses that I could pull down lower on my nose like grand-dad reading glasses for inside tunnels. The transition lenses darken quickly but take longer to lighten again.Might not work behind a helmet visor, as UV light get's blocked, at least reduced...