"7. Thus, under Section 3 tax has to be paid on every motor vehicle used or kept for use within the State. If a transport vehicle has a certificate of fitness as well as a valid certificate of registration then that vehicle will be presumed to have been kept for use. However, this does not mean that a vehicle which does not have a certificate of fitness and/or a certificate of registration is not capable of being used on the road. Merely because, legally, a vehicle cannot be plied on the road without a certificate of fitness and/or the registration certificate would not mean that all such vehicles are not capable of being used on the road. Under the Act, the owner of the vehicle has to pay tax. That is why Section 10 provides that whenever any motor vehicle is intended not to be used on the road for any period, the registered owner or person having possession or control thereof has to give an undertaking duly signed and verified in the prescribed form and manner and the Taxing Authority must be given intimation about the period the vehicle is intended not to be used and the place where the motor vehicle is going to be kept. The relevant documents including the registration certificate, fitness certificate, permit and tax token, etc. are to be delivered to the Taxing Officer. The undertaking