Bizarre facts about Elvis Presley that will leave you all shook up. Part 4. Did you know? Elvis is related to two U.S. presidents. He's a distant cousin to Jimmy Carter and a direct descendant of Abraham Lincoln's great-great-grandfather, Isaiah Harrison. Maybe they should have called him the president of rock and roll. Elvis bought his mother a Cadillac, though she couldn't drive. He also gave one to a backup singer and to his dentist and his hairstylist. When he saw a bank teller admiring his Cadillac, he wrote her a check so she could buy one for herself. Elvis was a sleepwalker and insomniac. When he was young, his mother took the inside knob off his bedroom door at night so that he wouldn't wander off and hurt himself. For Black Cat crossed the road ahead of his car, Elvis would search for another route, even if it took him miles out of the way. He was careful always to dress in the same order. First the right sleeve, then the right pant leg, right sock and right shoe, before dressing his left side. Now that's one suspicious mind.