Well dear, let me tell you the proper channel of how this thing is supposed to work,
As the deceased person can not appear in ETO office, now legal heirs will go to court and they will have to lodge a case in which other party will be ETO office, they (legal heirs) will argue that deceased person (their father/husband) has left this vehicle as the vehicle is also a material property which is part of heirloom for the heirs of deceased person and now they want to transfer this to their name, there can also be not be many owners of vehicle so practical approach that lawyers devise is, as one of his children (one who can easily appear in court) claims that vehicle was on his use so rest of heirs surrender their claim for this person, then when all the parties involved have given their written/oral statements infront of honorable judge then court will take decision, in which court directs ETO office to transfer the vehicle on the name of proposed heir.
Then ETO office is bound to transfer the vehicle as its the courts order, when the vehicle is transferred on one of his heirs that are alive, then he/she will have the authority to dispose off the vehicle however they desire, now that is rather lengthy process which not only takes time (6 to 12 months) but will also take quite a lot of resources (lawyer fees, court fees, court appearance) as well.
There is second way as well, where you get the fake transfer letter in prior date to original owners death, this will only involve the kickbacks in ETO office and you will not have to go to court.
So if your heart is really set upon this vehicle then visit the ETO office and try to get the gather what will be 'kharcha' for both the scenarios and then take the prudent action.
Faisal