I'm sure the insurance would be very high and maybe it wouldn't be too comfortable but I like the idea of having a "Language in London" bus and travelling round with a group of students learning English!
I also like the idea of learning English on walking / camping holidays... or just talking about things you like. We have a new course this summer called "British Books and Films" and the idea is just to create a relaxed atmosphere to chat about interesting subjects (with a teacher there to help, correct, point in the right direction, support etc).
Let me know if you have any creative ideas about good ways of learning a language. We're open to anything here!
Regards,
Stuart Rubenstein