I did, but Basel is £80 and Geneva is £200, and I'm used to a lot of driving (I have to drive 3 hours in the UK to get to the airport too!), so that's not a problem.
I like some of your suggestions thanks, in particular I saw lots of videos with cars travelling through grass fields with lots of tape, and this is the sort of area I try to avoid. Happy with long walks/drives into the hills to get a bit closer to the action.
On Saturday I will have to see the earliest stage at Champax-Lac to be able to get back to the airport in time.