I have a better idea. If a single person has a car which they mostly use for commuting to work and back, give them a hefty discount on a top-of-the-line electric bike, ala Scott e-Silence 10, or 20, or the Scott e-slience EVO. The better ones can travel 90 miles on a single charge. I've just ordered the e-Silence 10 because where I live I can ride to the shops, Sainsburys, into Ringwood, West Moors, or a myriad of other destinations with 90% certainty I won't get hit by a car. We live near the A31, which is always busy with motor traffic, but has a sidewalk on both sides of the road which has become a de-facto bike path of leisure cyclists. The Lycra-clad bike club members use the A31 due to their over-riding death-wish, while the rest of us use the pathway in order to satisfy a greater sense of self-preservation. If the government can give away £ billions to countries that haven't asked for it, and don't need it, then they can subsidise the electric bike revolution; although I don't see any net-gain from having 30,000,000 cyclists on the roads going to work every morning. It would look like China. Or launch a chemical/biological attack on the country and take out forty million of the sixty million inhabitants. Road problems solved.