Making Cars More Efficient

 

It's not difficult.

Most cars are too large, too heavy and unaerodynamic for the job they do, due to bad design. The technology is there to make them meet the requirement. Look at how Lotus get their performance from light weight and aerodynamics rather than brute force and ignorance.

We also must look at catalytic converters. Putting one on an engine is like asking Paula Radcliffe to compete in a tight corset. Lean burn and computer control nearly got the emissions down to the required level fifteen years ago and I am sure that these could now achieve the required levels.