Serious question if Trump actually goes to jail and wins!

First let me state I do not believe Trumps going to jail. I support and believe what truthers are saying. But hypothetically let’s say Trump goes to prison and stays in the presidential race. Trump could win the presidency from a jail cell. If that happens what happens then? Do they move the Oval Office to a jail cell so Trump can run the country for 4yrs? Would state of the unions and other speeches be given from a jail cell?