As a slightly tonque in cheek response to the
50 MPG club (Auto petrol only) thread (which BTW I think is excellent), I would like to start a 'where did it all go wrong' thread.
Ecomodder seems to me a place to learn from the success of others, but what about the mistakes - the things to avoid ?
So post your parachute aero, superglue tyres, lead alloys or concrete trainers.