Engineer RA Mashelkar shares three stories of ultra-low-cost design from India that use bottom-up rethinking, and some clever engineering, to bring expensive products (cars, prosthetics) into the realm of the possible for everyone. His take on the Nano, Gandhian Engineering and getting more for less are indeed thought provoking.
Getting more for less
Enterprisers.in 
so simple but attainable to digest talk. Excellent!