expenditure on Satellite spying

The UK is testing a satellite in space for car speeding between 2 points.
Spending hundreds of millions on this, I wonder if it's worth while and the government will ever get our money back by the amount of convictions?

Isn't this going too far?

We are in a economical crisis but the UK government is wasting so much of our money on scatter brain ideas like this or supporting countries that won't help themselves!