There is a subtle design error in the following cruise control system for a car. Can you find it?

Instruction: Simulate the behaviour of a cruise control system for a car. After starting the engine, to accelerate, keep pressing the accelerate button. To brake, keep pressing the brake button.

Find more resource from the textbook web site: http://www.doc.ic.ac.uk/~jnm/book/

Last modified: August 21, 2012