> Paris - Lyon by airplane: 1h15 plus travel to and from airport, plus security, boarding etc

Reminds of when someone says "this recipe only takes 20 minutes to make!" and they fail to mention you have to spend whole day shopping for ingredients, do some prep the day before and then spend half a day cleaning the kitchen afterwards... oh and then if you actually cook it for 20 minutes, chances are it will be barely safe to eat and would need much longer time.