BSNL has now launched an internet service for the car users in India. Internet connection can be accessed while travelling. The setting up the WiFi service in a car would cost around Rs. 6000.
You need to set up A WiFi antenna on the car. The speed could be around 3.5 Mbps.
Even Airtel has also been heard for launching car Wifi services, but in my opinion, BSNL would be the better choice in terms of both the cost factor and the service maintenance.