Have others experimented with similar tools or found them to be useful or not so much?
Not to plan an entire trip. But today I asked Gemini about public transit options north of Rovaniemi, that would take a bike. Excellent overview that allowed me to find alternatives in case of adverse weather. Regular search was useless.
Things evolve very fast. Google has announced an AI assisted version of its search engine. The above was run on free Gemini for Android.