Donald Trump was at Trump Tower in Manhattan earlier this afternoon to promote and sign copies of his new book, “Crippled America — How to Make America Great Again,” where he let loose on his challengers for the GOP nominations.

First up is this zinger when asked to do a Jeb Bush impression:

Ouch. Here’s the video:

And he went on to call Marco Rubio “overrated” and say that Ben Carson doesn’t have the “energy” needed to be president:

Other highlights from the book signing:

https://twitter.com/AdamBaldwin/status/661579937724297216

***

Related:

Andrew Breitbart in his own words on Marco Rubio