What is said about the new kind of cars?

M: Do you see any further advances in the area of energy conservation, Professor?
W: We definitely won’t be driving petrol-efficient cars. There will be far more fuel-efficient cars that don’t use carbon energy.
M: Fascinating, and I believe they will be much more environmentally friendly.

M: Are the teachers involved in your drama club?
W: Not at all. Our club is in charge of everything, from choosing actors, writing scripts to designing the costumes and even producing the brochure.
M: Sounds like a recipe for chaos to me!