G eorge Washington greets you as you enter the truck. The great man, dressed elegantly in a black velvet coat and white cravat, stares out from the 1796 Lansdowne portrait, the lifesize image of America’s first president painted during his final year in office. As you step towards the painting, something strange happens. Washington’s outstretched arm begins to move. His lips part. And lo and behold, the legend is talking to you! “My name is George Washington, you may have heard of me.” Not the most portentous opening line from such a towering figure, perhaps. But as he continues speaking, this AI Washington warms to his patriotic theme. He looks directly at you as if addressing the troops, and says: “Are you willing to pledge your lives, your fortunes and your sacred honor for the American cause? The fate of country, the fate of liberty, is in your hands.” No pressure then. Nothing much is left to the imagination in Donald Trump ’s traveling paean to American greatness.…