
We also have for you, a larger image from Entertainment Weekly's article. So you can get a better look at this big guy supposedly trying to befriend Laura Haddock's character. We don't think it's working very well, sorry Roddy!

In the above mentioned article a passage explains more about Hot Rot and his relationships with other characters. It also tells us that his vehicular mode is a 1963 Citroën DS.
Alongside Mark Wahlberg’s salt-of-the-earth mechanic, Anthony Hopkins is joining the cast as Sir Edmund Burton, an astronomer who — with the help of Hot Rod — has tracked these long-forgotten connections to another scholar, Oxford professor of English literature Viviane Wembly (Laura Haddock, who played Star-Lord’s mother in Guardians of the Galaxy).
She has no idea she harbors a genetic secret that could destroy (or save) the world. “[The humans] are empowered in a way that is very different than we’ve experienced before and honestly, it’s not easy figuring out how to empower the six foot human versus the 35- or 45-foot robot,” says producer Lorenzo di Bonaventura.
In the image here, Wembly comes face to face with the longtime friend she didn’t even know she had — the Autobot covert agent Hot Rod. She’s freaked out — and not planning to go quietly.
Hot Rod has secretly been serving as her protector in the guise of her father’s 1963 Citroën DS.
“It’s a rickety old thing, but she can’t part with it because she adores it,” Haddock says of the vintage vehicle. “This car has actually been put there to watch her and feedback information to Anthony Hopkins’s character about what she’s up to and her life. So yeah, she gets kind of taken [by surprise] in a really funny, dramatic way by this Hot Rod.”
The revelation also reshapes how she viewed her dad. “She’s not had a very good relationship with her father, but this is one thing that her father has done that makes her realize that maybe he cared than she thought.”