Good suggestion brit..

imprisonment or car confiscation will do..

but these has a slim chance coz it will endanger the locals of jail and a parking space for cars that are confiscated..

Adding more cameras can also help..

Like my way to Mesaaeed.. it only has 3 cameras for 30kms span.. like 1 cam every 10 kilometers..

If a LC memorizes the 3 cameras they can speed up to 160- 240kph then just slow down on 3 spots for 120kph..

Qatar has the means, they can put as many cameras if they want to lessen accidents..