Experiments of car-pooling in Europe: 3 main classes.
1. Car-pooling promoted by local authorities and public agencies, targeting all the citizens, (although from public employees), and often funded and coordinated by EU.
2. Car-pooling initiatives from institutions and companies for their own employees only.
3. Car-pooling projects, both business and non profit oriented, specially designed for occasional trips or long-distance travels.
Tentatively estimated number of total users in Europe: about half a million