“LBJ ordered the bubble top taken off JFK’s car. He also hit the floor of his car when they turned the corner in front of the book depository.”
No.. LBJ didn’t. Secret Service agent Clint Hill long ago said Kennedy made that decision to keep the bubble top of the limo.
If true, it looks like just about the only time the bubble top was off.
http://jfkbubbletop.blogspot.com/