"If we could get another vehicle out there, maybe we could pull it out, or even winch it out.  Other than that, I'm not sure how to get it unstuck, and I don't know if it would even be possible to bring a vehicle through the portal to help you out."  Unfortunately, none of Kyle's powers could help in this situation, unless making the vehicle a maximum of 10% lighter would help.  Without knowing more about the technology of the man's world, he couldn't even know if they had the tech to winch it out.
"I'm Kyle Long." he said, introducing himself.