They will test & certify a car to be trouble free for next 6 months to 1 year & will be giving you a 6 lac car in 7 lac or may be 730K.
I don't find this deal is worth at all since if you get the car checked by ur trusted mechanic, there is less than 10% chance that u will face any engine or suspension related problem within 1 year...... Still if there is any problem, you can fix it in much much much less than the 1 lac that u pay in advance to cater the 5-10% risk factor........ Not a reasonable deal for me at-least :S