Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

Emory Roberts said that at the time of the shooting, the Presidential limo was 20 to 25 feet ahead of the Secret Service follow-up car. 

But, we can check that with our own eyes because both vehicles were captured in the Altgens photo. I put an x at the back of the limo and a y at the front of the Queen Mary.

Does that look like 20 to 25 feet? Doesn't it look more like the 5 feet that others said it was, including Clint Hill?

So, Roberts lied. Why'd he lie? He lied because he wanted to make it seem like they were powerless to do anything, that they were too far away. They were 5 feet away. That's less than my height, and I'm not a tall man. They were close enough that they could have yelled through the air at Greer:

"Step on it! Floor it, Greer! Get out of here! There's gunfire! Move it!  God-damn it, go!"

But, Roberts didn't want you to know that. At the moment he was talking to Lawson (and who knows if he was really talking to Lawson since Lawson never confirmed it) he could have been yelling at Greer to speed away.