Don't you think it's strange that they rehabilitated the limo in which JFK was slaughtered? Why would they do that? Have other Presidents sit in the very seat where JFK got his brain blown out? It might be a bit distracting and unnerving, don't you think? And regarding money, they must have spent as much to restore it as what a new one would have cost. But regardless, this is the US government we're talking about. They borrow a million dollars a minute- and that's on a good minute. The cost of the limo was irrelevant. So, why'd they do it?
I think they did it in order to contain the evidence, to make sure that it didn't fall into the wrong hands. It would have looked bad if they torched it- though they would have been happy to. They couldn't sell it. And, I don't mean that they couldn't find a buyer; I'm sure they could have. But, that's exactly what they didn't want to do: hand it over to someone. That's because someone could have used it to run tests- including testing the Single Bullet Theory.
So, by keeping it in the Presidential motor pool, they kept it out of enemy hands. And, I bet you it wasn't used very much.
The 1961 Lincoln’s incredible history continued long after the tragic events that unfolded in Dallas. Only five months after Kennedy’s assassination, the car was fully rebuilt, upgraded with bulletproof armor, and returned to the Presidential motorcade.