If you are planning to drive to Shimla after April 1, be prepared to shell out more, as the Shimla Municipal Corporation proposes to levy green fee on vehicles not bearing Himachal Pradesh registration numbers. While four-wheelers will be charged `200 per entry, the two-wheelers will be made to pay `100 per entry. Municipal Corporation will levy green fee (not tax) on vehicles as part of resource-generation initiative on the lines of Manali town. The funds generated through this measure will be ploughed back to create new amenities for tourists